1. Tanaka Growth Clinic, Tokyo, Japan
2. Department of Medical Subspecialties, National Center for Child Health and Development, Tokyo, Japan
3. Department of Pediatrics, Asahikawa Medical University, Hokkaido, Japan
4. Osaka Koseinenkin Hospital, Osaka, Japan
5. Toho University School of Medicine, Tokyo, Japan
6. Sanchikai Medical Corporation, Kanagawa, Japan
7. Pfizer Japan Inc., Tokyo, Japan