1 Professor and Chairman, Department of Pediatric and Adolescent Medicine, Western Michigan University Homer Stryker MD School of Medicine, Kalamazoo, MI, USA.
2 Director, National Institute of Child Health and Human Development, Professor of Pediatrics, Hadassah Hebrew University Medical Center, Jerusalem, Israel.
3 Professor of Pediatrics, University of Kentucky, Lexington, KY, USA.
4 Professor of Public Health, Center for Healthy Development, School of Public Health, Georgia State University, Atlanta, GA, USA.