1. Department of Preventive Medicine, Soonchunhyang University College of Medicine, Cheonan-si, Korea
2. Department of Surgery, Inje University, Ilsan Paik Hospital, Goyang-si, Korea
3. Research Institute for Healthy Cities and Health Impact Assessment, Soonchunhyang University, Cheonan-si, Korea
4. Department of Health Policy and Management, Seoul National University College of Medicine Seoul, Korea