Medicine (Baltimore) 2017 Mar;96(11):e6402
Department of Preventive Medicine, Konkuk University School of Medicine, Seoul Department of Nursing Science, Shinsung University, Dangjin Department of Public Health, the Graduate School of Public Health Institute of Health Policy and Management, Medical Research Center, Seoul National University Department of Health Policy and Management, Seoul National University College of Medicine, Seoul Department of Preventive Medicine, Chungnam National University School of Medicine, Daejeon Public Health Medical Service, Boramae Medical Center, Seoul National University College of Medicine, Seoul, South Korea.