1. Department of Internal Medicine, Pusan National University Hospital, Busan, Korea.
2. Department of Internal Medicine, Gimhae Bokum Hospital, Gimhae, Korea.
3. Department of Internal Medicine, Good Gang-An Hospital, Busan, Korea.
4. Department of Nursing, Pusan National University Hospital, Busan, Korea.
5. Department of Nutrition, Pusan National University Hospital, Busan, Korea.
6. Department of Pharmacy, Pusan National University Hospital, Busan, Korea.
7. Department of Biostatistics, Pusan National University Hospital, Busan, Korea.
8. Kim Yong Ki Internal Medicine Clinic, Busan, Korea.