1. Department of Nutrition; School of Public Health; University of North Carolina; Chapel Hill NC USA
2. Department of Epidemiology; School of Public Health; University of North Carolina; Chapel Hill NC USA
3. Department of Biostatistics; School of Public Health; University of North Carolina; Chapel Hill NC USA
4. Division of Endocrinology/Diabetes; The Center for Child Health and Policy; Department of Pediatrics; Rainbow Babies and Children's Hospital; Case Western Reserve University; Cleveland OH USA
5. Division of General Pediatrics; Stanford Prevention Research Center; the Center for Healthy Weight; Stanford University; Lucile Packard Children's Hospital at Stanford; Stanford CA USA