Affiliation: | (1) Faculty of Health Sciences, Yamaguchi University School of Medicine, Ube City, Yamaguchi-Ken 755-8554, Japan e-mail: masato@po.cc.yamaguchi-u.ac.jp Tel.: +81-836-222816 Fax: +81-836-222816, JP;(2) Clinical Laboratory, Kohseiren Nagato Hospital, Nagato, Japan, JP;(3) Department of Pediatrics, Tokuyama Central Hospital, Tokuyama, Japan, JP |