1. Medical Research Collaborating Center, Seoul National University Hospital/Seoul National University College of Medicine, Seoul, South Korea
2. Department of Occupational Medicine, Kangbuk Samsung Hospital, Seoul, South Korea
3. Korea Institute of Drug Safety and Risk Management, Seoul, South Korea
4. Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, South Korea
5. Chung-Ang University College of Pharmacy, Seoul, South Korea
6. Department of Internal Medicine, Dongguk University College of Medicine, Gyeongju, South Korea
7. Department of Family Medicine, Health Promotion Center, Seoul National University Bundang Hospital, Bundang, South Korea
8. Department of Family Medicine, Hallym University College of Medicine, Chuncheon, South Korea