[1] Massachusetts Vet Epidemiol Res & Informat Ctr MA, US VA Cooperat Studies Program, Boston, MA USA
[2] NYU, Sch Med, Dept Med, Leon H Charney Div Cardiol, New York, NY USA
[3] Brigham & Womens Hosp, Div Aging, Boston, MA 02115 USA
[4] Harvard Univ, Sch Med, Boston, MA USA
[5] Boston Univ, Sch Publ Hlth, Dept Biostat, Boston, MA USA
[6] Yale Univ, Sch Med, Dept Med, Sect Geriatr, New Haven, CT 06510 USA
[7] Yale Univ, Sch Med, Dept Internal Med, Sect Cardiovasc Med, New Haven, CT 06510 USA
[8] Yale Univ, Sch Publ Hlth, Dept Hlth Policy & Adm, New Haven, CT USA