1. Department of Dermatology, Severance Hospital, Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea.
2. Department of Pediatrics, Dankook University Hospital, Cheonan, Korea.
3. Department of Dermatology, Atopy Clinic, Seoul Medical Center, Seoul, Korea.
4. Department of Dermatology, School of Medicine, Kyungpook National University, Daegu, Korea.
5. Department of Internal Medicine, Inje University Ilsan Paik Hospital, Goyang, Korea.
6. Department of Pediatrics, Atopy Clinic, Seoul Medical Center, Seoul, Korea.
7. Department of Pediatrics, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea.
8. Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea.
9. Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea.
10. Department of Pediatrics, School of Medicine, Kyung Hee University, Seoul, Korea.
11. Department of Pediatrics, College of Medicine, the Catholic University of Korea, Seoul, Korea.
12. Department of Dermatology, Soonchunhyang University College of Medicine, Seoul, Korea.
13. Department of Dermatology, Chung-Ang University Hospital, Seoul, Korea.