[1] Columbia Univ, Dept Med, Vagelos Coll Phys & Surg, Div Nephrol, New York, NY USA
[2] Columbia Univ, Renal Epidemiol Grp, New York, NY USA
[3] Columbia Univ, Dept Epidemiol, Mailman Sch Publ Hlth, New York, NY USA
[4] Cleveland Clin, Dept Quantitat Hlth Sci, Cleveland, OH 44106 USA
[5] Cleveland Clin, Lerner Res Inst, Ctr Populat Hlth Res, Cleveland, OH 44106 USA