1. Center for Liver Cancer; National Cancer Center; Goyang Republic of Korea
2. Korean Liver Cancer Association; Seoul Republic of Korea
3. Department of Gastroenterology, Liver Center, Asan Medical Center; University of Ulsan College of Medicine; Seoul Republic of Korea
4. Korea Central Cancer Registry, Division of Cancer Registration and Surveillance; National Cancer Center; Goyang Republic of Korea
5. Department of Applied Statistics; Gachon University; Seongnam Republic of Korea
6. Department of Biostatistics, Graduate School of Public Health; Yonsei University; Seoul Republic of Korea
7. Department of Internal Medicine; Keimyung University School of Medicine; Daegu Republic of Korea