1. Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, the Republic of Korea.
2. Department of Pediatrics, National Cancer Center, Goyang, the Republic of Korea.
3. Department of Pediatrics, Cheju Halla General Hospital, Jeju Special Self-Governing Province, the Republic of Korea.
4. Department of Pediatrics, Myungji Hospital, Goyang, the Republic of Korea.
5. Department of Gynecology and Obstetrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, the Republic of Korea.
6. Department of Infectious Diseases, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, the Republic of Korea.
7. Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, the Republic of Korea.