[1] Duke Clin Res Inst, Durham, NC USA
[2] Duke Univ, Med Ctr, Durham, NC USA
[3] Univ Amsterdam, Ctr Heart, Acad Med Ctr, NL-1012 WX Amsterdam, Netherlands
[4] Chinese Acad Med Sci, Fuwai Hosp, Natl Ctr Cardiovasc Dis, Beijing 100730, Peoples R China
[5] Peking Union Med Coll, Beijing 100021, Peoples R China
[6] Emory Univ, Sch Med, Div Cardiothorac Surg, Atlanta, GA 30322 USA