1. Department of Pediatrics, Endocrine Research Institute, Yonsei University College of Medicine, Seoul, Korea.
2. Department of Pediatrics, Seoul National University, Seoul, Korea.
3. Department of Pediatrics, University of Ulsan, Seoul, Korea.
4. Department of Pediatrics, The Catholic University of Korea, Seoul, Korea.
5. Department of Pediatrics, Kyungpook National University, Daegu, Korea.
6. Department of Pediatrics, Inje University, Busan, Korea.
7. Department of Pediatrics, Korea University, Seoul, Korea.
8. Department of Pediatrics, Ajou University, Suwon, Korea.
9. LG Life Sciences, Ltd., Seoul, Korea.
10. Sowha Children's Hospital, Seoul, Korea.