1. Professor of Pediatrics, Tehran University; Medical Director, Reza Pahlavi Medical Center, Tehran, Iran; Lecturer in Pediatrics, The Johns Hopkins University.
2. From the Department of Pediatrics, Naval Hospital, Camp Pendleton, Calif. 92055. The opinions or assertions in this paper are those of the author and are not to be construed as official or reflecting the views of the Navy Department or the Naval Service at large.