1. Department of Health Promotion, Yonsei University Health System, Severance Health Check-Up, Seoul, Korea.
2. Department of Radiology, Ewha Womans University School of Medicine, Seoul, Korea.
3. Department of Pathology, Ewha Womans University Mokdong Hospital, Ewha Womans University School of Medicine, Seoul, Korea.
4. Biostatistics Collaboration Team, National Cancer Center, Goyang, Korea.