[1] Harvard Univ, Sch Med, Joslin Diabet Ctr, Pediat & Adolescent Unit,Genet & Epidemiol Sect,B, Boston, MA 02115 USA
[2] Florida State Univ, Coll Med, Dept Med Humanities & Social Sci, Tallahassee, FL 32306 USA
[3] Med Coll Georgia, Ctr Biotechnol & Genom Med, Augusta, GA 30912 USA
[4] Univ Florida, Coll Med, Dept Pediat, Gainesville, FL USA