Marriage S C, Booy R, Hermione Lyall E G, Evans J A, Owens C, Watkins R P, Walters S
Department of Paediatric Infectious Diseases, Imperial College School of Medicine, London, UK.
Pediatr Infect Dis J. 1996 Jun;15(6):549-51. doi: 10.1097/00006454-199606000-00019.