1. Department of Pediatrics Soonchunhyang University Hospital Gumi South Korea
2. Department of Pediatrics Chungnam National University Hospital Daejeon South Korea
3. Department of Pediatrics Hallym University Chuncheon Sacred Heart Hospital Chuncheon South Korea
4. Department of Pediatrics Inje University Sanggye Paik Hospital Seoul South Korea
5. Department of Pediatrics Eulji University Hospital Seoul South Korea
6. Department of Pediatrics Kangwon National University School of Medicine Chuncheon South Korea
7. Department of Pediatrics Pusan National University Children's Hospital, Pusan National University School of Medicine Yangsan South Korea
8. Department of Pediatrics, Chungnam University Sejeong Hospital Chungnam National University College of Medicine Sejong South Korea
9. Department of Pediatrics Dongguk University Ilsan Hospital Goyang South Korea
10. Department of Pediatrics, Daejeon St. Mary's Hospital, College of Medicine The Catholic University of Korea Daejeon South Korea
11. Department of Pediatrics Eulji University Hospital Daejeon South Korea
12. Department of Pediatrics Wonkwang University School of Medicine Iksan South Korea
13. Department of Pediatrics Dankook University College of Medicine Cheonan South Korea
14. Department of Pediatrics Chonnam National University Hostpital, Chonnam National University Medical School Gwangju South Korea
15. Department of Pediatrics College of Medicine, Chosun University, Chosun University Hospital, Gwangju, South Korea Gwangju South Korea
16. Department of Pediatrics Presbyterian Medical Center Jeonju South Korea
17. Department of Pediatrics Soonchunhyang University Bucheon Hospital Bucheon South Korea
18. Department of Pediatrics Daegu Catholic University Medical Center Daegu South Korea
19. Department of Pediatrics School of Medicine, Kyungpook National University Daegu South Korea
20. Department of Pediatrics Donga‐A University College of Medicine Busan South Korea
21. Department of Pediatrics Incheon Medical Center Incheon South Korea
22. Department of Pediatrics College of Medicine, The Catholic University of Korea, Uijeongbu St. Mary's Hospital Uijeongbu South Korea
23. Department of Pediatrics University of Ulsan College of Medicine, Gangneung Asan Hospital Gangneung South Korea
24. Department of Pediatrics Busan ST. Mary's Hospital Busan South Korea
25. Department of Pediatrics Sungkyunkwan University School of Medicine, Kangbuk Samsung Hospital Seoul South Korea
26. Department of Pediatrics Soonchunhyang University Hospital Seoul South Korea
27. Department of Pediatrics, CHA Bundang Medical Center CHA University School of Medicine Seongnam South Korea
28. Department of Pediatrics Kogel Hospital Daejeon South Korea
29. Divison of Bacterial Diseases Bureau of Infectious Disease Diagnosis Control, Korea Disease Control and Prevention Agency (KDCA) Sejong South Korea
30. Department of Pediatrics Inje University Haeundae Paik Hospital Busan South Korea
31. Department of Pediatrics Hallym University Dongtan Sacred Heart Hospital Hwasung South Korea
32. Department of Pediatrics Chungnam National University College of Medicine Daejeon South Korea