Friedland L R, Raphael S A, Deutsch E S, Johal J, Martyn L J, Visvesvara G S, Lischner H W
Department of Pediatrics, St. Christopher's Hospital for Children, Philadelphia, PA.
Pediatr Infect Dis J. 1992 May;11(5):404-7. doi: 10.1097/00006454-199205000-00012.