1. Department of Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea.
2. Department of Preventive Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea.
3. Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea.
4. Regeneration Medicine Research Center, Yonsei University Wonju College of Medicine, Wonju, Korea.
5. Cell Therapy and Tissue Engineering Center, Yonsei University Wonju College of Medicine, Wonju, Korea.
6. Institute of Occupational and Environmental Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea.