Uehara Ritei, Yashiro Mayumi, Hayasaka Shinya, Oki Izumi, Nakamura Yosikazu, Muta Hiromi, Ishii Masahiro, Matsuishi Toyojiro, Sonobe Tomoyoshi, Yanagawa Hiroshi
Department of Public Health, Jichi Medical School, 3311-1 Yakushiji Minamikawachi, Tochigi 329-0498, Japan.
Pediatr Infect Dis J. 2003 Sep;22(9):839-42. doi: 10.1097/01.inf.0000086388.74930.0d.