[1] Ohio State Univ, Div Epidemiol, Columbus, OH 43210 USA
[2] Ohio State Univ, Ctr Biostat, Columbus, OH 43210 USA
[3] Univ Pittsburgh, Dept Epidemiol, Pittsburgh, PA 15261 USA
[4] Ohio State Univ, Dept Internal Med, Columbus, OH 43210 USA
[5] Northwestern Univ, Dept Prevent Med, Chicago, IL 60611 USA
[6] Cornell Univ, Div Nutr Sci, Ithaca, NY 14853 USA
[7] Univ Alabama Birmingham, Dept Med, Birmingham, AL 35294 USA
[8] Univ Iowa, Dept Epidemiol, Iowa City, IA USA
[9] Univ N Carolina, Dept Epidemiol, Chapel Hill, NC USA
[10] George Washington Univ, Dept Med, Washington, DC USA
[11] Harvard Univ, Dept Environm Hlth, Cambridge, MA 02138 USA
[12] Vanderbilt Univ, Dept Med, Nashville, TN USA