1. Department of Radiology and Research Institute of Radiological Science, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul 06273, Republic of Korea
2. Biostatistics Collaboration Unit, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
3. Department of Pediatrics, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul 06273, Republic of Korea