[1] Univ Washington, Dept Med, Cardiovasc Div, Seattle, WA USA
[2] VA Puget Sound Hlth Care Syst, S111-CARDIO,1660 S Columbian Way, Seattle, WA 98108 USA
[3] Univ Texas Southwestern Med Ctr, Dept Med, Cardiovasc Div, Dallas, TX USA
[4] Duke Univ, Sch Med, Duke Clin Res Inst, Durham, NC USA
[5] Beth Israel Deaconess, Richard A & Susan F Smith Ctr Outcomes Res Cardiol, Boston, MA USA
[6] Harvard Med Sch, Med Ctr, Boston, MA USA
[7] Patient Ctr Outcomes Res Inst PCORI, Washington, DC USA
[8] Pulse Heart Inst, Cardiol Serv, Tacoma, WA USA