Joel M. Gelfand, MD MSCE
Professor of Dermatology and Epidemiology
University of Pennsylvania Perelman School of Medicine
Philadelphia, Pennsylvania
Leonard Calabrese, DO
Professor of Medicine
Cleveland Clinic
Cleveland, Ohio
Stephen B. Hanauer, MD, FACG
Medical Director of Digestive Health Center
Northwestern University Feinberg School of Medicine
Northwestern University Feinberg School of Medicine
Chicago, Illinois