1. Dartmouth Hitchcock Medical Center; Department of Pediatrics; 1 Medical Center Drive Lebanon NH USA 03784
2. Honorary Professor of Child Health, Queen's University (Retired); 74 Deramore Park South Belfast Northern Ireland UK BT9 5JY
3. University of Rochester; Pediatrics; Dept of Pediatrics (Neonatology), Box 651 601 Elmwood Ave Rochester NY USA 14642
4. Dartmouth-Hitchcock Medical Center; Department of Pediatrics, Neonatal Division; One Medical Center Drive Lebanon NH USA 03576-001
5. University of Vermont Medical Center; Division of Neonatal-Perinatal Medicine; 111 Colchester Avenue Burlington Vermont USA 05401
6. Pontificia Universidad Javeriana; Department of Clinical Epidemiology and Biostatistics, Faculty of Medicine; Cr. 7 #40-62, 2nd floor Bogotá DC Colombia