[1] Wayne State Univ, Sch Med, Dept Pediat, Prevent Res Ctr, Detroit, MI 48201 USA
[2] Univ Florida, Coll Publ Hlth & Hlth Profess, Dept Epidemiol, Gainesville, FL USA
[3] Univ Florida, Coll Med, Gainesville, FL USA
[4] Med Univ S Carolina, Dept Psychiat & Behav Sci, Charleston, SC 29425 USA
[5] Wayne State Univ, Sch Med, Dept Pediat, Div Endocrinol, Detroit, MI 48201 USA