Division of Cancer Registration and Surveillance, National Cancer Center, Goyang, Korea. Division of Cancer Early Detection, National Cancer Center, Goyang, Korea. Division of Cancer Registration and Surveillance, National Cancer Center, Goyang, Korea; Western Pacific Regional Office, World Health Organization, Manila, the Philippines. Department of Epidemiology and Health Promotion, Institute for Health Promotion, Graduate School of Public Health, Yonsei University, Seoul, Korea. Department of Social and Preventive Medicine, Hallym University, Chuncheon, Korea. College of Medicine, Korea University, Seoul, Korea. Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Korea. International Prevention Research Institute, Lyon, France. International Prevention Research Institute, Lyon, France; The Tisch Cancer Institute, Mount Sinai School of Medicine, New York, New York, United States of America.