[1] Univ Michigan, Sch Publ Hlth, Dept Hlth Behav & Hlth Educ, 1415 Washington Hts, Ann Arbor, MI 48109 USA
[2] Harvard TH Chan Sch Publ Hlth, Ctr Biostat AIDS Res, Boston, MA USA
[3] St Jude Childrens Res Hosp, Dept Infect Dis, 332 N Lauderdale St, Memphis, TN 38105 USA
[4] San Diego State Univ, Dept Clin Psychol, San Diego, CA 92182 USA
[5] Univ N Carolina, Gillings Sch Publ Hlth, Collaborat Studies Coordinating Ctr, Dept Biostat, Chapel Hill, NC 27515 USA
[6] Frontier Sci & Technol Res Fdn Inc, Amherst, NY USA