Affiliation: | (1) Department of Pediatrics, Kyushu University Hospital, Fukuoka, Japan;(2) Department of Pediatric Surgery, Kyushu University Hospital, Fukuoka, Japan;(3) Infection Control Team, Kyushu University Hospital, Fukuoka, Japan;(4) Fukuoka City Institute for Hygiene and the Environment, Fukuoka, Japan;(5) Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka 812-8582, Japan |