1. Sections on Developmental Pediatrics of the Departments of Pediatrics of New York Medical College, Valhalla, New York; Room 332, Cedarwood Hall, Westchester Institute for Human Development, Valhalla, New York 10595
2. Department of Research Methodology of St. Louis University, St. Louis, Missouri
3. Section of General Academic Pediatrics of the Department of Pediatrics of St. Louis University School of Medicine, St. Louis, Missouri
4. St. Louis University School of Medicine, St. Louis, Missouri