Master Terms Christie Ballantyne, M.D. Item Definition Interim Chief, Cardiology and Chief, Cardiovascular Research Mark Herman, M.D. Item Definition Chief, Endocrinology, Diabetes, and Metabolism Aaron Thrift, Ph.D. Item Definition Chief, Epidemiology and Population Sciences Mohamed Othman, M.D. Item Definition Chief, Gastroenterology and Hepatology Joslyn Fisher, M.D., M.P.H. Item Definition Chief, General Internal Medicine Elizabeth Kvale, M.D., M.S.P.H. Item Definition Chief, Geriatrics and Palliative Medicine Laura Petersen, M.D., M.P.H. Item Definition Chief, Health Services Research Leo Luznik, M.D Item Definition Chief, Hematology and Oncology Jasvinder Singh, M.D., M.P.H Item Definition Chief, Immunology, Allergy, and Rheumatology Thomas Giordano, M.D., M.P.H. Item Definition Chief, Infectious Diseases Wolfgang Winkelmayer, M.D., Sc.D. Item Definition Chief, Nephrology Ivan Rosas, M.D. Item Definition Chief, Pulmonary, Critical Care, and Sleep Medicine Ellen Fremion, M.D. Item Definition Chief, Adult Transition Medicine