1. Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
2. Department of Laboratory Medicine, Soonchunhyang University Hospital, Cheonan, Korea.
3. Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
4. Department of Pediatrics, Severance Children's Hospital, Yonsei University College of Medicine, Seoul, Korea.
5. Department of Pediatrics, Gachon University Gil Medical Center, Incheon, Korea.
6. Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
7. Green Cross Genome, Yongin, Korea.