| Affiliation: | 1. Départment de pédiatrie, Service de gastroentérologie, Hôpital Sainte-Justine, University of Montreal, Montreal, P. Q., Canada;2. Département de chirurgie, Hôpital Sainte-Justine, University of Montreal, Montreal, P. Q., Canada;1. Department of Pediatrics, Temple University School of Medicine, Philadelphia, Pa., USA;2. Department of Physiological Chemistry, Temple University School of Medicine, Philadelphia, Pa., USA;3. Department of Obstetrics, Temple University School of Medicine, Philadelphia, Pa., USA |
