[1] Indiana Univ, Polis Ctr, Indianapolis, IN 46204 USA
[2] Indiana Univ, Div Biostat, Indianapolis, IN 46204 USA
[3] Indiana Univ, Ctr Diabet Res & Training, Indianapolis, IN 46204 USA
[4] Indiana Univ, Childrens Hlth Serv Res Program, Indianapolis, IN 46204 USA