[1] Emory Univ Hosp Midtown, Emory Struct Heart & Valve Ctr, Div Cardiol, Atlanta, GA USA
[2] NHLBI, Cardiovasc Branch, Div Intramural Res, NIH, Bethesda, MD USA
[3] Emory Univ Hosp Midtown, Emory Struct Heart & Valve Ctr, Div Cardiol, 550 Peachtree St NE, Davis Fischer Bldg, Atlanta, GA 30306 USA