Dr. Robert M. Davidson is currently working as Clinical Practitioner of Internal Medicine, Hugman-Kent Clinic, P.A. Gladewater, TX. He has completed his Ph.D. in Pharmaceutical Chemistry from University of California, San Francisco, USA. Previously he was appointed as Solo Practitioner of Internal Medicine at dba Robert Davidson, M.D. Longview, TX, and Dominion Health Services P.A, Group practice of Internal Medicine at American Physician Incorporated Tucson, AZ, Clinical research Sub-investigator at VIVRA Asthma Allergy Care America of Arizona, P.C. Tucson, AZ, Internal Medicine Physician at CIGNA HealthCare of Arizona, and Associate Medical Director at The Du Pont Merck Pharmaceutical Company. He has published 27 research articles in journals as well as 6 abstracts contributed as author/co-author.