[1] Vet Affairs Palo Alto Healthcare Syst, Palo Alto, CA USA
[2] Stanford Univ, Dept Med, Stanford, CA 94305 USA
[3] Stanford Cardiovasc Inst, Stanford, CA 94305 USA
[4] Univ Michigan, Dept Pediat Internal Med & Radiol, Ann Arbor, MI 48109 USA
[5] Duke Univ, Sch Med, Duke Clin Res Inst, Durham, NC USA
[6] UC San Diego Hlth, La Jolla, CA USA
[7] Inova Heart & Vasc Inst, Falls Church, VA USA
[8] Icahn Sch Med Mt Sinai, Zena & Michael Wiener Cardiovasc Inst, New York, NY 10029 USA