[1] Vanderbilt Univ, Sch Med, Vanderbilt Epidemiol Ctr, Div Epidemiol,Dept Med, Nashville, TN 37212 USA
[2] Vanderbilt Univ, Sch Med, Vanderbilt Ingram Canc Ctr, Nashville, TN 37212 USA
[3] Case Western Reserve Univ, Dept Epidemiol & Biostat, Cleveland, OH 44106 USA
[4] Vanderbilt Univ, Sch Med, Dept Mol Physiol & Biophys, Nashville, TN 37212 USA
[5] Shanghai Canc Inst, Dept Epidemiol, Shanghai, Peoples R China