1. Department of Preventive Medicine, School of Public Health, Seoul National University, Korea.
2. Department of Health Policy & Management, College of Medicine, Cheju National University, Korea.
3. Korea Health Industry and Development Institute, Korea.
4. Department of Preventive Medicine, College of Medicine, Cheju National University, Korea.
5. Department of Occupational & Preventive Medicine, College of Medicine, Busan National University, Korea.
6. Research Institute for National Cancer Control & Evaluation, National Cancer Center, Korea.