Charles Moser, Ph.D., M.D., received his Ph.D. from the Institute for Advanced Study in Human Sexuality, where he is now a Professor of Sexology and Dean of Professional Studies. He went on to earn his M.D. degree from Hahnemann University School of Medicine in Philadelphia in 1991. He is board-certified in Internal Medicine and is also a board-certified Sexologist. He maintains a private internal medicine practice in San Francisco, with a focus on sexual concerns and the medical problems of sexual minorities. He is the author ofGreenery Press's "Health Care Without Shame: A Handbook for the Sexually Diverse and Their Caregivers."