1. Department of Pediatrics; Graduate School of Medical Science; Kyoto Prefectural University of Medicine; Hirokoji-Kawaramachi Kamigyo Japan
2. Department of Education; Kyoto University of Education; Fukakusa; Fushimi Kyoto Japan
3. School of Nursing; Kyoto Prefectural University of Medicine; Hirokoji-Kawaramachi Kamigyo Japan
4. Department of Mathematics and Statistics in Medical Sciences; Graduate School of Medical Science; Kyoto Prefectural University of Medicine; Hirokoji-Kawaramachi Kamigyo Japan