1. The Korea Central Cancer Registry, National Cancer Center, Goyang, Korea.
2. Korean Medical Record Association, Seoul, Korea.
3. Department of Healthcare Management, College of Health Industry, Eulji University of Korea, Seongnam, Korea.
4. Data Analysis and Interpretation Group, Biostatistics and Epidemiology Cluster, International Agency for Research on Cancer, Lyon, France.
5. National Cancer Control Institute, National Cancer Center, Goyang, Korea.