1. Department of Pediatrics, Seoul National University College of Medicine, Seoul, Korea.
2. Department of Pediatrics, Gangneung Asan Hospital, College of Medicine, Ulsan University, Gangneung, Korea.
3. Department of Pediatrics, Jeju National University Hospital, Jeju, Korea.
4. Department of Pediatrics, Dankook University Hospital, Cheonan, Korea.
5. Department of Pediatrics, Kangwon National University School of Medicine, Chuncheon, Korea.
6. Department of Pediatrics, Jeonbuk National University Medical School and Hospital, Jeonju, Korea.
7. Department of Pediatrics, Korea University Medical Center Anam Hospital, Seoul, Korea.
8. Department of Pediatrics, School of Medicine, Kyungpook National University, Kyungpook National University Children’s Hospital, Daegu, Korea.
9. Department of Pediatrics, Ajou University School of Medicine, Suwon, Korea.
10. Department of Pediatrics, Chungnam National University Hospital, Chungnam National University College of Medicine, Daejeon, Korea.
11. Department of Pediatrics, Eulji University Eulji General Hospital, Seoul, Korea.
12. Department of Pediatrics, Ewha Womans University Mokdong Hospital, Seoul, Korea.
13. Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
14. Department of Pediatrics, Incheon St. Marys’ Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
15. Department of Pediatrics, CHA University School of Medicine, Pocheon, Korea.
16. Department of Pediatrics, Asan Medical Center Children’s Hospital, University of Ulsan College of Medicine, Seoul, Korea.
17. Department of Pediatrics, Severance Children’s Hospital, Severance Pediatric Liver Research Group, Yonsei University College of Medicine, Seoul, Korea.
18. Department of Pediatrics, Pusan National University Children’s Hospital, Pusan National University School of Medicine, Yangsan, Korea.