1. Department of Medical IT Engineering, Soonchunhyang University, Asan, Korea.
2. Institute of Occupational and Environmental Medicine, Soonchunhyang University, Asan, Korea.
3. Department of Preventive Medicine, Soonchunhyang University, Asan, Korea.
4. Onnuri Health Center, Daejeon, Korea.
5. Department of Food and Nutrition, Institute of Basic Sciences, Hoseo University, Asan, Korea.