1. Department of Pediatrics, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
2. Department of Obstetrics and Gynecology, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
3. Department of General Surgery, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
4. Department of Radiology, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
5. Department of Pathology, College of Medicine, Chung-Ang University, Seoul, Republic of Korea