From the Department of Population Health Sciences (E.M.F.), Robert Wood Johnson Health and Society Scholars Program; Institute on Aging (G.D.L., C.D.R.); Department of Psychology (M.A.R., R.J.D., C.D.R.), University of Wisconsin-Madison, Madison, Wisconsin; Department of Psychology (H.L.U.), Tufts University, Medford, Massachusetts; Office of Population Research (B.H.S.), Princeton University, Princeton, New Jersey.
Address correspondence and reprint requests to Elliot Friedman, Department of Population Health Sciences, 624 WARF Office Bldg., 610 N. Walnut Street, Madison, WI 53726. E-mail: [email protected]
Received for publication June 13, 2006; revision received May 16, 2007.
This research was supported by the Robert Wood Johnson Foundation (E.F.), Grant P01-AG020166 from the National Institute on Aging (C.R., B.S., G.L.), Grant P50-MH61083 from the National Institute of Mental Health (C.R., B.S., G.L., R.D., H.U.), and Grant M01-RR03186 from the National Institutes of Health (General Clinical Research Center, University of Wisconsin-Madison).