1. Department of Pediatrics, Chungnam National University Sejong Hospital, Sejong, Korea.
2. Division of Pulmonology and Allergy, Department of Internal Medicine, Gachon University Gil Medical Center, Gachon University College of Medicine, Incheon, Korea.
3. Department of Pediatrics, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Korea.
4. Department of Otorhinolaryngology-Head and Neck Surgery, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon, Korea.
5. Department of Otorhinolaryngology-Head and Neck Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
6. Department of Pulmonology, Allergy and Critical Care Medicine, CHA Bundang Medical Center, CHA University, Seongnam, Korea.
7. Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Korea.
8. Department of Otolaryngology, Ajou University School of Medicine, Suwon, Korea.
9. Department of Pediatrics, Yongin Severance Hospital, Yonsei University College of Medicine, Yongin, Korea.
10. Institute of New Frontier Research, Division of Big Data and Artificial Intelligence, Hallym University College of Medicine, Chuncheon, Korea.
11. Department of Otolaryngology-Head and Neck Surgery, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
12. Department of Otorhinolaryngology-Head and Neck surgery, Uijeongbu Eulji Medical Center, Eulji University, Uijeongbu, Korea.
13. Department of Otorhinolaryngology-Head and Neck surgery, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea.
14. Department of Pediatrics, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea.
15. Department of Pulmonology and Allergy, Hallym University Dongtan Sacred Heart Hospital, Hwaseong, Korea.
16. Allergy and Clinical Immunology Research Center, Hallym University College of Medicine, Chuncheon, Korea.
17. Lee and Hong ENT Sleep and Cosmetic Center, Seongnam, Korea.
18. Department of Pediatrics, Asthma and Allergy Center, Inje University Sanggye Paik Hospital, Seoul, Korea.
19. Division of Allergy, Department of Internal Medicine, Kosin University College of Medicine, Busan, Korea.
20. Pediatric Allergy and Respiratory Center, Department of Pediatrics, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, Seoul, Korea.