1Total Healthcare Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
2Department of Preventive Medicine, Graduate School, Kyung Hee University, Seoul, Republic of Korea
3Informatization Department, Ewha Womans University Seoul Hospital, Seoul, Korea.
4Departments of Preventive Medicine, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
5Department of Occupational and Environment Medicine, College of Medicine, Ewha Womans University, Seoul, Republic of Korea
6Department of Occupational & Environmental Medicine, Kyung Hee University Hospital, Seoul, Republic of Korea
7Department of Obstetrics and Gynecology, Kyung Hee University Hospital, Seoul, Republic of Korea
8Departments of Occupational and Environmental Medicine, School of Medicine, Kyung Hee University, Seoul, Republic of Korea