[1] Univ Miami, Div Biostat, Miami, FL 33136 USA
[2] Univ Copenhagen, Dept Biostat, DK-1014 Copenhagen, Denmark
[3] Cleveland Clin, Dept Quantitat Hlth Sci, Cleveland, OH 44195 USA
[4] Johns Hopkins Univ, Sch Med, Dept Med, Baltimore, MD 21205 USA
[5] Johns Hopkins Univ, Dept Epidemiol, Bloomberg Sch Publ Hlth, Baltimore, MD 21205 USA