1. Department of Pediatrics, Korea University College of Medicine, Korea.
2. Department of Rehabilitation Medicine, National Health Insurance Corporation, Ilsan Hospital, Korea.
3. Department of Psychiatry, National Health Insurance Corporation, Ilsan Hospital, Korea.
4. Department of Pediatric Dentistry, Seoul National University School of Dentistry, Korea.
5. Department of Pediatrics, Inje University Ilsan Paik Hospital, Korea.
6. Department of Otolaryngology-Head and Neck Surgery, Hallym University, Korea.
7. Department of Pediatrics, Catholic University College of Medicine, Korea.
8. Department of Pediatrics, Kwandong University College of Medicine, Korea.
9. Department of Family Medicine, Inje University Sanggye Paik Hospital, Korea.
10. Department of Pediatrics, Seoul Veterans Hospital, Korea.
11. Department of Ophthalmology, Ulsan University College of Medicine, Korea.
12. Department of Pediatrics, National Health Insurance Corporation, Ilsan Hospital, Korea.