1. Department of Occupational and Environmental Medicine, Chosun University Hospital, Gwangju, Korea.
2. Center for Fishermen’s Safety and Health, Chosun University Hospital, Gwangju, Korea.
3. Department of Preventive Medicine, College of Medicine and Institute of Health Science, Gyeongsang National University, Jinju, Korea.
4. Center for Fishermen’s Safety and Health, Gyeongsang National University Hospital, Jinju, Korea.
5. Department of Occupational and Environmental Medicine & Institute of Environmental and Occupational Medicine, Inje University Busan Paik Hospital, Busan, Korea.
6. Center for Fishermen’s Safety and Health, Inje University Busan Paik Hospital, Busan, Korea.