1. Hyereen Kim's Internal Medicine Clinic, Yangsan, Korea.
2. Department of Internal Medicine, Pusan National University School of Medicine, Busan, Korea.
3. Biomedical Research Institute, Pusan National University Hospital, Busan, Korea.
4. Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, Busan, Korea.
5. Department of Otolaryngology, Pusan National University School of Medicine, Busan, Korea.
6. Kim Yong Ki Internal Medicine Clinic, Busan, Korea.