1. Department of Internal Medicine, Pusan National University School of Medicine, Busan, Korea.
2. Medical Research Institute, Pusan National University School of Medicine, Busan, Korea.
3. Department of Rehabilitation Medicine, Pusan National University School of Medicine, Busan, Korea.
4. Pusan National University Collegy of Pharmacy, Busan, Korea.
5. Department of Nuclear Medicine, Pusan National University School of Medicine, Busan, Korea.
6. Kim Yong Ki Internal Medicine Clinic, Busan, Korea.