1. Department of Pediatrics, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon, Gangwon-do, Korea
2. Department of Pediatrics, Seoul National University Children’s Hospital, Seoul, Korea (Current address)
3. Department of Pediatrics, Gachon University Gil Medical Center, Incheon, Korea
4. Department of Pediatrics, Soonchunhyang University Bucheon Hospital, Soonchunhyang University College of Medicine, Bucheon, Gyeonggi-do, Korea
5. Department of Pediatrics, Konyang University Hospital, Konyang University College of Medicine, Daejeon, Korea
6. Department of Pediatrics, Keimyung University Dongsan Hospital, Keimyung University College of Medicine, Daegu, Korea
7. Department of Pediatrics, Kosin University Gospel Hospital, Kosin University College of Medicine, Busan, Korea
8. Department of Pediatrics, Haeundaepaik Hospital, Inje University College of Medicine, Busan, Korea
9. Department of Pediatrics, Inje University Ilsan Paik Hospital, Goyang, Gyeonggi-do, Korea
10. Department of Pediatrics, Chungnam National University Hospital, Daejeon, Korea
11. Department of Pediatrics, Sanggye-Paik Hospital, Inje University College of Medicine, Seoul, Korea
12. Department of Pediatrics, Korea University College of Medicine, Korea University Guro Hospital, Seoul, Korea