1. Department of Medicine (S.L.H., L.Z., M.J.E., M.P., C.M., C.C.J.), Indiana University School of Medicine, Indianapolis, Indiana 46202
2. Regenstrief Institute for Health Care, and Indiana University Center on Aging Research (S.L.H., A.J.P.), Indianapolis, Indiana 46202
3. Departments of Obstetrics and Gynecology and Medicine (C.L.), University of Massachusetts Medical School, Worcester, Massachusetts 01655