[1] Vanderbilt Univ, Dept Med, Div Cardiovasc Med, Med Ctr, Nashville, TN USA
[2] Vanderbilt Univ, Med Ctr, Vanderbilt Translat & Clin Cardiovasc Res Ctr VTR, Nashville, TN USA
[3] Vanderbilt Univ, Dept Med, Div Epidemiol, Med Ctr, Nashville, TN 37235 USA
[4] Amgen Inc, Ctr Observat Res, Thousand Oaks, CA 91320 USA
[5] Toxstrategies Inc, Epidstrategies, Cary, NC 27511 USA