1. Department of Clinical Chemistry and Laboratory Medicine; Kyushu University Hospital; Fukuoka; Japan
2. Department of Pediatrics; Graduate School of Medical Sciences; Kyushu University; Fukuoka; Japan
3. Department of Pediatrics and Child Neurology; Oita University Faculty of Medicine; Oita; Japan
4. Department of Pediatrics; Graduate School of Medicine; University of Toyama; Toyama; Japan
5. Department of Obstetrics and Gynecology; Faculty of Medicine; University of Miyazaki; Miyazaki; Japan
6. Department of Pediatrics; Kitakyushu Yahata Higashi Hospital; Kitakyushu; Japan