1. Department of Preventive Medicine and Public Health, Catholic Kwandong University College of Medicine , Gangneung, Republic of Korea
2. Department of Neurology, Catholic Kwandong University College of Medicine, International St. Mary's Hospital , Incheon, Republic of Korea
3. Department of Cardiology, Catholic Kwandong University College of Medicine, International St. Mary's Hospital , Incheon, Republic of Korea
4. Institute for Occupational and Environmental Health, Catholic Kwandong University , Gangneung, Republic of Korea
5. Department of Preventive Medicine, Yonsei University College of Medicine , Seoul, Republic of Korea