1. Department of Pediatrics, Inha University School of Medicine, Incheon, Korea.
2. Diabetes Endocrinology Center, Inha University School of Medicine, Incheon, Korea.
3. Department of Occupational & Evironmental Medicine, Inha University School of Medicine, Incheon, Korea.
4. Department of Pediatrics, Soonchunhyang University Bucheon Hospital, Soonchunhyang University School of Medicine, Bucheon, Korea.
5. Department of Nursing, Inha University College of Medicine, Incheon, Korea.