[1] Vanderbilt Univ, Dept Med, Div Genet Med, Med Ctr, Nashville, TN USA
[2] Meharry Med Coll, Dept Family & Community Med, Nashville, TN USA
[3] Vanderbilt Univ, Dept Med, Div Epidemiol, Med Ctr, Nashville, TN USA
[4] Vanderbilt Univ, Dept Psychol, Nashville, TN USA
[5] Vanderbilt Univ, Dept Biomed Informat, Med Ctr, Nashville, TN USA
[6] Vanderbilt Univ, Dept Thorac Surg, Med Ctr, Nashville, TN USA
[7] Vanderbilt Univ, Dept Med, Div Genet Med, Med Ctr, 2525 West End Ave,7th Floor Suite, Nashville, TN 37203 USA