1. Department of Pediatrics, Soonchunhyang University Bucheon Hospital, Soonchunhyang University College of Medicine, Bucheon, Korea
2. Department of Pediatrics, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
3. Department of Pediatrics, School of Medicine, Kyungpook National University, Daegu, Korea
4. Crohn’s and Colitis Association in Daegu-Gyeongbuk (CCAiD), Daegu, Korea
5. Department of Pediatrics, Keimyung University Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea
6. Department of Pediatrics, Ajou University Medical Center, Suwon, Korea
7. Department of Pediatrics, Kosin University Gospel Hospital, Kosin University College of Medicine, Busan, Korea