Lowell I. Gerber MD, MS, FACC
Phone: (207) 263-4520
Dr. Gerber was born and raised in Chicago, IL. He received both his undergraduate degree and master’s degree in physiology of exercise from the University of Illinois and his medical degree from Loyola University, Stritch School of Medicine. During his postgraduate education, Dr. Gerber was a Research Fellow in Experimental Pulmonary Pathology at the Stritch School of Medicine. Then he completed his residency in Internal Medicine and his fellowship in Cardiology at the University of South Florida College of Medicine in Tampa, Florida in 1980.
He was trained in coronary and peripheral vascular interventions in 1980. In 1986, Dr. Gerber was a visiting professor at the University of Normandy in Rouen, France where developed expertise in interventional, non-surgical treatment of structural heart disease. He was trained by the team of physicians who developed and carried out the first the percutaneous aortic valve procedure.
Dr. Gerber is a Diplomate in the American Board of Internal Medicine, Subspecialty Board of Cardiovascular Disease, Subspecialty Nuclear Cardiology and Subspecialty Interventional Cardiology. He is a fellow of the American College of Cardiology and the American Heart Association. He is a member of ILADS and completed the Lyme Fundamentals Course.
Dr. Gerber has held academic and research faculty appointments and has co-authored multiple cardiology publications and textbook chapters. Practice interests have included cardiac prevention and rehabilitation, interventional cardiology and cardiac imaging.
During the past 10 years he has focused his interests on proactive prevention and healthy aging. In order to reverse his own problems with obesity and pre-diabetes he sought advanced training in metabolism, nutrition, diabetes care, and bariatric medicine. He studied with the experts, and learned their methods. He has advanced training in BioIndividual Nutrition, Membrane Medicine, and has also certified as a GAPS practitioner. He travelled to Australia for training in nutrigenomics. Dr. Gerber has had training in IV nutrient therapies, bio-identical hormones, ozone therapy, energy therapy, photo-biomodulation, herbs, homeopathic, and essential oils.
Subsequent to his own disabling neurological Lyme problems he studied and researched, becoming a Lyme literate physician. After his experience as a patient at "Clinica De La Luz" and experiencing the compassionate care of Dr. Virginia Marston, ND and her staff, Dr. Gerber “saw the Light”. He continues to evolve the practice of holistic medicine with a personal understanding and special interest in helping patients and their families with complex chronic diseases to achieve the healing that they deserve. It is his belief that La Luz Wellness Center provides the best setting for him to achieve his mission.
University of Illinois, Urbana, IL
B.S. - 1970 - Biology
University of Illinois, Urbana, IL
M.S. - 1971 - Physiology (Exercise)
Loyola University, Stritch School of Medicine, Maywood, IL
M.D. - 1974
Research Fellow, Experimental Pulmonary Pathology, 1974-1975
Department of Pathology, Loyola University
Stritch School of Medicine, Maywood, Illinois
Internship/Residency, Internal Medicine, 1975 – 1978
University of South Florida College of Medicine, Tampa, Florida
Fellowship, Cardiovascular Disease, 1978 – 1980
University of South Florida College of Medicine, Tampa, Florida
Diplomate, American Board of Internal Medicine, #67100, 9/13/1978
Diplomate, Subspecialty Board of Cardiovascular Disease, #67100, 11/11/1981
Diplomate, Subspecialty Nuclear Cardiology, # 137, 1996
Diplomate, Subspecialty Interventional Cardiology, #67100, 2000
Level 3 Certification, Society of Cardiovascular Computed Tomography, 2008
Diplomate, Certification Board of Cardiovascular Computed Tomography, 9/22/08
Age Management Medicine: Cenegenics Education and Research Foundation, 2008
Age Management Hormone Training: Neal Rouzier Part 1-4, 2009 - recurring
Nutrition and Metabolic Management: Innovative Metabolic Solutions, 2009
Bariatric Medicine: Mentorships & ASBP Online Modules
Certified GAPS Practitioner: 2014
BioIndividual Nutrition: 2015
Nutrigenomics: Fitgenes Certified Practitioner 2014
Membrane Medicine: Neurolipid.org 2015-2019
Medical Director, Clinical trials of the iScan device using Stimulus Evoked Acoustic Emission Technology for the Diagnosis of Cardiometabolic Disorders. Signal Insight, Inc Access Health Renewal Clinic, Freeport, ME 2009-Current
Visiting Cardiologist in Clinical Research, Service de Cardiologie, Centre Hospitalier Regional et Universitaire de Rouen, Hospital Charles-Nicolle, Rouen, France, 5/23/06-11/16/06
Principle Investigator, Transcatheter Closure of Patent Foramen Ovale Using CardioSEAL Septal Occlusion System, Naples Community Hospital, 2003
Principle Investigator, Transcatheter Closure of Patent Foramen Ovale Using Amplatzer PFO Occluder System, Naples Community Hospital, 2003
Principle Investigator, Implantation of Percutaneous Covered Coronary Stent for Treatment of Coronary Artery Aneurysm Associated with Acute Myocardial Infarction, Tampa General Hospital, 2001
Co-Investigator, Transcatheter Defect Occlusion using the CardioSEAL Septal Occlusion System, IRB Study #5894, Tampa General Hospital, 2001-2005, ( J Sullebarger P. I. )
Research Assistant, Implantation of Percutaneous Aortic Valve in Lambs, CERA Applied Research and Experiment Center, Institut Mutualiste Montsouris, Paris, France May, 2000, Alain Cribier Principal Investigator
RESEARCH EXPERIENCE (cont.):
Principle Investigator, Rheolytic Thrombectomy for Massive and Sub-Massive Pulmonary Embolism, protocols at Tampa General Hospital and University Community Hospital, Tampa, Florida 1998-2001,
Principle Investigator AVE, Inc. “SOAR” Non Randomized Sub-Optimal angioplasty Results Registry for investigational renal stent. 1998
Sub-Investigator Genentech, Inc. “LIMIT” Recombinant humanized anti CD18 monoclonal Antibody in acute MI. 1998
Principal Investigator, TORAY INDUSTRIES “A Dose-Ranging Study to Evaluate the Safety and Effectiveness of Intravenously Administered TRK-820 in Patients with Hyponatremia Coincident with Congestive Heart Failure, 1998
Co-Investigator, ACS - DUET - MULTILINK STENT Trial, 1998
Principal Investigator, ATLAS “Acolysis during Treatment of Lesions Affecting Saphenous Vein Bypass Grafts, 1998
Sub-Investigator, Carvedilol (Copernicus) Evaluating use of Carvedilol in patients NYHA Class II-IV, 1996 – 1997
Sub-Investigator, DESTINI-CER, Evaluating the Doppler flow wire used in coronary arteries. Patients randomized to stent vs. optimal PTCA, 1997
Principal Investigator, SB209670, Evaluating an endothelin inhibitor, SB209670, as a treatment in prevention of acute renal failure in patients undergoing cardiac catheterization who are at high risk for acute renal failure. (Phase I Study), 1997
Sub-Investigator, HART II, Evaluating the use of Lovenox vs. IV heparin in the setting of acute MI, 1997
Principal-Investigator USCI/BARD Pronto-Flex PTCA Catheter, Perfusion PTCA balloon catheter evaluation,1997.
Sub-Investigator, Spectranetics, Peripheral Excimer Laser Angioplasty in patients with chronic limb ischemia, 1997
Sub-Investigator, Cook, Inc., Evaluating Coronary Stent GRII Coronary Stent,1996
Interventional Cardiology Research Fellowship: Service de Cardiologie, Centre Universitaire de Rouen, Hospital Charles Nicolle, September - December 1996
Sub-Investigator, A Triple-Blind, Parallel Study to Investigate the Comparison of Oral Agents on the Reduction of Morbidity and Mortality in Hypertensive Patients with Left Ventricular Hypertrophy, 1996
Sub-Investigator, A Multi-Center, Double-blind, Placebo-controlled, Parallel Design Clinical Trial to Assess the Safety and Efficacy of Antiarrhythmic Agent for the Prophylactic Treatment of Symptomatic Atrial Fibrillation/Flutter and/or Symptomatic Paroxysmal Supraventricular Tachycardia, 1995
RESEARCH EXPERIENCE (cont.)
Sub-Investigator for: A Randomized, Double-blind Dose-titration, Parallel Group, Placebo-controlled Study to Evaluate the Effect of An Oral Agent on Survival in Patients with Congestive Heart Failure, 1995
Sub-Investigator for: A Prospective, Open Label, Randomized Comparison of Two Treatment Regimens: An Oral Agent Versus Usual Care in Patients Being Treated for Mild to Moderate Hypertension who Need to Switch Drug Therapy (Phase III). March1995
Sub-Investigator for: The Effect of an Oral Agent on All Causes of Mortality in Comparison with Placebo in Patients with Chronic Heart Failure (Phase III).1995
Sub-Investigator for: A Randomized, Double-Blind, Placebo Controlled Study of the Effects of an Intravenous Agent on Cardiac Outcomes in Patients Undergoing PTCA or Atherectomy Due to Unstable Angina Pectoris or Following Acute Myocardial Infarction (Phase III).1994
Sub- Investigator for: A Randomized, Double-Blind, Placebo Controlled, Multiple Dose Study of the Chronic Administration of an Oral gent in Heart Failure (Phase III) 1994
Sub-Investigator, A Multi-center, Double-blind, Randomized, Parallel, ACEI-controlled Study to Investigate the Safety and Tolerability of an Oral Agent in Elderly Patients with Symptomatic Heart Failure.1994
Sub-Investigator, A Randomized, Double-blind Efficacy and Safety Evaluation of an Intravenous Agent vs. Placebo for Reducing the Complications of Coronary Angioplasty.1994
Sub-Investigator, An Open-label Study of an Oral Agent in the Treatment of Hypercholesterolemia in Clinical Practice Settings. 1993
Sub-Investigator, A Randomized Double-blind Study to Compare the Efficacy and Safety of Fixed Low Doses of a Combination Oral Agent to Aspirin Alone in the Prevention of Reinfarction, Cardiovascular Death, and Stroke in Post-myocardial Infarction Patients. 1993
Sub-Investigator, A Randomized Double-blind, Dose-titration, Parallel Group, Placebo-controlled Study in Patients with Severe Heart Failure. 1992
Sub-Investigator, The Safety and Efficacy of an Oral Agent in the Treatment of Stable Angina Pectoris.1992
Principal Investigator, Clinical Applications of Synchronized Retroperfusion of Coronary Veins: Use in Unstable Angina Pectoris/Evolving Myocardial Infarction (Retroperfusion Systems, Inc.), Holy Cross Hospital, Salt Lake City, Utah 1989
Principal Investigator, Percutaneous Aortic Valvuloplasty in Adults (Mansfield Scientific, Inc.) Tampa General Hospital, Tampa, Florida 1988
Principal Investigator, Percutaneous Mitral Valvuloplasty in Adults (Mansfield Scientific, Inc.) Tampa General Hospital, Tampa, Florida 1988
RESEARCH EXPERIENCE (cont.)
Principal Investigator, Percutaneous Aortic Valvuloplasty in Adults (USCI), Tampa General Hospital, Tampa, Florida 1988
Principal Investigator, Percutaneous Mitral Valvuloplasty in Adults (USCI), Tampa General Hospital, Tampa, Florida 1988
Visiting Cardiologist in Clinical Research, Service de Cardiologie, Centre Hospitalier Regional et Universitaire de Rouen, Hospital Charles-Nicolle, Rouen, France, September 1987-May 1988
Principal Investigator, Percutaneous Balloon Aortic and Mitral Valvuloplasty in the Adult, Lovelace Medical Center, Albuquerque, New Mexico 1986-1987
Principal Investigator, Treatment of Acute Myocardial Infarction with Intracoronary Streptokinase and Percutaneous Coronary Angioplasty in a Community Hospital Without Cardiovascular Surgery, Eastern Idaho Regional Medical Center, Idaho Falls, Idaho 1982-1986
Co-Investigator, Midwest Multicenter Study of Intracoronary Streptokinase and Coronary Angioplasty in Acute Myocardial Infarction (J.P. Galichia, Principal Investigator), St. Francis Hospital, Wichita, Kansas 1981-1982
Research Fellow in Experimental Pulmonary Pathology, Department of pathology, Loyola University, Stritch School of Medicine, Maywood, Illinois1974-1975
Research Fellow (Part-time) Department of Pathology, Loyola University, Stritch School of Medicine, Maywood, Illinois1971-1974
Undergraduate Research Fellowships in Respiratory Diseases (Awarded by Tuberculosis Institute of Chicago and Cook County) Department of Pathology, Loyola University, Stritch School of Medicine, Maywood, Illinois, Summers 1971-1972
Teaching and Research Assistant, Human Environmental Research Unit, Department of Physiology and Biophysics, University of Illinois, Urbana, Illinois1969-1970
PROFESSIONAL SOCIETY MEMBERSHIPS:
International Society of Carotid Artery Therapy, Founding Member - 1998
President-Elect, Idaho Affiliate American Heart Association - 1986
American Society of Nuclear Cardiology – 1996-2000
American College of Cardiology, Fellow – 1978-present
Society for Cardiac Angiography and Interventions, Fellow – 1984- 2006
American Heart Association, 1978- present
Nutrition and Metabolism Society 2009-present
American Society of Bariatric Physicians: 2009-2016
The Society for Vascular Medicine and Biology-2000-2005
Society of Cardiovascular Computed Tomography, Founding Member-2005
The Society for Geriatric Cardiology-2007
Maine Gerontological Society 2009- 2015
International Lyme and Associated Diseases Society 2016- present
First Place, Research Paper Competitions, American College of Physicians, West Coast Academy of Physicians, September 12, 1979.
(“The Mechanism of Injury and Treatment of Severe Gram Negative Sepsis in a Bacteremic Rat Model.”)
FACULTY MEMBER OF LIVE DEMONSTRATION COURSES:
Balloon valvuloplasty for aortic valve stenosis in adults. Rouen, France, October 1-2, 1987
Balloon valvuloplasty for aortic valve stenosis in adults. Rouen, France May 18-20, 1988
Balloon valvuloplasty for aortic and mitral valve stenosis in adults. Tampa, FL, Feb. 25, 1989
2nd Seminar on Interventional Cardiology Rouen, France, October 14-25, 1996
2nd Carotid Angioplasty Meeting, Nancy, France, 1997
Balloon valvuloplasty for aortic valve stenosis: The Rouen Experience. Prepared for Mansfield Scientific, Inc., Rouen, France October 1987
Technical Considerations in Balloon Aortic Valvuloplasty, Centre Hospitalier Regional et Universitaire de Rouen, Hospital Charles-Nicolle, Rouen, France May 1988
Abstract Reviewer and Grader Transcatheter Cardiovascular Therapeutics Annual International Symposium, Cardiovascular Research Foundation and Society for Cardiac Angiography and Interventions, 1999-2007
Wakat, D.S., Johnson, R.E., Krzywicki, H.J., and Gerber, L.I.: A correlation between body volume and body mass in man. American Journal of Clinical Nutrition. 24:1308-1312, 1971.
Johnson, R.E., Wakat, D., Gerber, L., and Woodal, T.: Water economy in long distance running. Procedures of the 4th International Congress on Regulation of Food and Water Intake, Cambridge. August, 1971.
Balis, J.U., Gerber, L.I., Rappaport, E.S., and Neville, W.E.: Mechanisms of blood- vascular reactions of the primate lung to acute endotoxemia. Experimental Molecular Pathology. 21:123-137, 1974.
Balis, J.U., Rappaport, E.S., Gerber, L.I., Fareed, J., Buddingh, R., and Messmore, H.L.: A primate model for prolonged endotoxin shock. Blood-vascular reactions and effects of glucocorticoid treatment. Laboratory Investigation. 38:511-523, 1978.
Balis, J.U., Patterson, J.F., Shelley, S.A., Larson, G.H., and Gerber, L.I.: Glucocorticoid and antibiotic effects on hepatic microcirculation and associated host responses in lethal gram-negative bacteremia. Laboratory Investigation. 40:55-65, 1979.
Richman, A.F., Gerber, L.I., and Balis,J.U.: Peritubular Capillaries. A major target site of endotoxin- induced vascular injury in the primate kidney. Laboratory Investigation. 43:327-332, 1980.
Saoudi, N., Galtier, M., Hidden, F., Gerber, L. Letac, B.: Bundle branch ventricular tachycardia: A possible mechanism of flecainide proarrhythmic effect. Journal of Electrophysiology.
Cribier A., Letac, B., Gerber, L.: Percutaneous Balloon Aortic Valvuloplasty: The State of the Art: A Review of Two Years’ Experience in Rouen, Journal of Interventional Cardiology, 1:237-250, 1988.
Berland, J., Rocha, P., Lefebvre, E., Cribier, A., Gamra, L., Letac, B.: Double balloon valvuloplasty for the association of mitral and tricuspid stenosis, E Eur Heart J, 9(Suppl A):612, 1988.
Berland, J., Gerber, L., Gamra, H., Boussadia, H., Cribier, A., Letac, B.: Percutaneous Balloon Valvuloplasty for Mitral Stenosis Complicated by Fatal Pericardial Tamponade in a Patient with Extreme Pulmonary Hypertension Catheterization and Cardiovascular Diagnosis, 17:109-111, 1989.
Rocha, P., Berland, J., Mechmeche R., Gamra, H., Boussadia, H., Gerber, L., Grigera, F., Letac, B.: Valvuloplastia Percutanea Mitral Por Balao Resultados Imediatos de 80 Casos, Arq. Bras. Cardiol. 52:253-258, 1989
Koning, R., Cribier, A., Gerber, L., Eltchaninoff, H., Tron, C.,Gupta, V., Soyer, R., Letac, B.: A New Treatment for Severe Pulmonary Embolism: Percutaneous Rheolytic Thrombectomy. Circulation, 1997; 96:2498-2500.
Henry, M., Amor, M., Mentre, B., Gerber, L., Tzvetanov, K., Drawin, T.: The Popliteal Approach. In Henry, M., Amor,M., Dietrich, EB., KatzenBT., (Chairmen), Proceedings of the 8th International Course of Peripheral Vascular Intervention, 1997; 8:79-86.
Henry, M., Amor, M., Mentre, B., Henry, I., Gerber, L., Tzvetanov, K.: The Contralateral Approach. In Henry, M., Amor, M., Dietrich, EB., Katzen, B. (Chairmen), Proceedings of the 8th International Course of Peripheral Vascular Intervention, 1997; 8:87-99.
Henry, M., Amor, M., Gerber, L., Tzvetanov, K.: Collection of Clinical Case Examples. In Henry, M., Amor, M., Dietrich, EB., Katzen, BT. (Chairmen), Proceedings of the 8th International Course of Peripheral Vascular Intervention. 1997; 8:477-515.
Henry, M., Amor, M., Masson, I., Gerber, L.: Carotid Angioplasty and Stenting, Personal Experience. In Henry, M., Amor, M., (Chairmen), Proceedings of the 2nd Carotid Angioplasty Meeting, 1997; 105-11
Henry, M,. Amor, M, Henry, I, K, Buniet, JM, Amicabile, C, Gerber, L, Khanna, N.N. Percutaneous Endovascular Treatment of Peripheral Aneurysms. In Henry, M., Amor, M. (Chairmen), Proceedings of the 9th International Course of Peripheral Vascular Intervention, 1998; 9:445-457.
18. Sullebarger, J., Sayad, D., Gerber, L., Ettedui, J., Jimmo-Waumans, S., Alcebo, P.: Percutaneous Closure of Atrial Septal Defect via Transjugular Approach With the Amplatzer Septal Occluder after Unsuccessful Attempt Using the CardioSEAL Device, Catheterization and Cardiovascular Interventions, 2004; 62:262-265
19. Cribier A, Eltchaninoff , H, Tron C, Bauer F, Gerber L Percutaneous Implantation of Aortic Valve Prosthesis in Patients with Calcific Aortic Stenosis: Technical Advances, Clinical Results, and Future Strategies. J Interven Cardiol 2006;19:S87–S96
20. Schweiger MJ, Chambers CE, Davidson CJ, Blankenship J, Bhalla NP, Block P, Dervan JP, Gasperetti C,
Gerber L, Kleiman N, Krone RJ, Phillips W, Siegel R, Uretsky BF, Laskey WK, and members of the Laboratory Performance Standards Committee for the Society for Cardiac Angiography and Interventions. Prevention of contrast induced nephropathy: Recommendations for the high risk patient undergoing cardiovascular procedures. Catheterization and Cardiovascular Interventions. 2007;69:135–140
21. Cribier A., Eltchaninoff H., Jolly, N., Gerber L. Percutaneous Aortic Valves: Emerging,
Indian Heart Journal Vol 59 Supplement B, 2007; B118-B132
Balis, J.U., Rappaport, E.S., Gerber, L.I., and Neville, W.E.: Development of lung lesions in endotoxin shock. American Journal of Pathology. 66:53a, 1972.
Balis, J.U., Rappaport, E.S., Gerber, L.I., and Buddingh, R.: Continuous endotoxemia in rhesus monkeys as a clinically relevant model for shock lung. American Journal of Pathology, 74:90a, 1974.
Balis, J.U., Shelley, S.A., Patterson, J.F., Paciga, J.E., and Gerber, L.I.: Mechanism of congestive atelectasis in endotoxin shock. Circulatory Shock. 6:184, 1979.
Cribier, A., Berland, J., Gerber, L., Koning, R., Bellefleur, J.P., Letac, B.: Two years’ experience of balloon valvuloplasty for aortic stenosis in adults. International Congress of Cardiology, Toulouse, France. February 1988.
Letac, B., Cribier, A., Berland, Jr., Gerber, L.: Disruption complication of percutaneous balloon dilatation in adult stenosis. Xth Congress of the European Society of Cardiology, Vienna, Austria. August, 1988.
Berland, Jr., Rocha, P., Lefebvre, E., Cribier, A., Gamra, H., Gerber, L., Letac, B.: Double balloon valvuloplasty for the association mitral and tricuspid stenosis. Xth Congress of the European Society of Cardiology, Vienna, Austria. August, 1988.
Gerber, L., M.D., Bin-Sagheer, Syed T., M.D., McAllister, E., M.D., Cannella, X., M.D., Cardoso, T., M.D., Nord, H.J., M.D.: Celiac artery compression syndrome treated by laparoscopic surgery and endovascular stent placement. International Endovascular Peripheral Course, Monaco. May, 2000.
Gerber, L., M.D., Bin-Sagheer, Syed T., M.D., McAllister, E., M.D., Cannella, X., M.D., Cardoso, T., M.D., Nord, H.J., M.D.: Laparoscopic surgery and endovascular stent placement. ISES European Summer Symposium-Global Endovascular Approach in the Treatment of Vascular Disease, Bordeaux, France. June, 2000.
Gerber, L., M.D., Novitzky, D., M.D., Sullebarger, T., M.D., et al, The TandemHeart Transseptal Percutaneous VAD as a Bridge to Surgery Following Failed Percutaneous Closure with an Amplatzer Occluder for Ventricular Septal Rupture in the Setting of Right Ventricular Myocardial Infarction and Recurrent Refractory Cardiogenic Shock. EuroPCR, Paris, France. May 2005
The French Experience. In Topol E. (ed.): Textbook of Interventional Cardiology Cribier, A., Gerber, L., Letac, B.: Percutaneous Balloon Aortic Valvuloplasty: Saunders, 1990, pp.849-867.
Cribier, A., Gerber, L.,Letac, B., Aortic Valvuloplasty. In Topol(ed.): Textbook of Interventional Cardiology: Update 3, Saunders, 1991, pp.43-58.
Cribier, A., Gerber, L., Letac, B.: Percutaneous Balloon Aortic Valvuloplasty: Update of Techniques. Results and Indications in the Rouen Experience. In Vogel J and King S(eds): The Practice of Interventional Cardiology. Mosby, 1993, pp. 575-582.
Cribier A, Eltchaninoff H, Tron C, Gerber L. Percutaneous aortic valvular approaches: balloon aortic valvuloloplasty and percutaneous valve replacement with the Cribier-Edwards Bioprosthesis. In Topol EJ(Ed): Textbook of Interventional Cardiology, 5th ed. Philadelphia, WB Saunders, 2007 Chapter 52 pp. 921-945
Cardio-Immu-Knowledgy of Lyme and Associated Disease Syndromes (cILADS): It’s not just about the bug, it’s not just about the microbe; it’s all about you. International Lyme & Associated Diseases Society, ILADS 2018 Annual Scientific Conference: Tick-Borne Disease and the Immune System, Nov 4, 2018, Chicago, IL
Video interview of Dr. Gerber, ILADS 2018 Annual Scientific Conference https://lowellgerber.com/2018-ilads-conference-video-interview-of-dr-gerber/ Nov 4, 2018, Chicago, IL
The Role of Tick-Borne Disease in Heart Disease, Hot Topics in Lyme Disease, April 27, 2019, Augusta, ME