1. Department of Internal Medicine, Pusan National University School of Medicine, Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea.
2. Division of Infectious Diseases, Department of Internal Medicine, Daegu Fatima Hospital, Daegu, Republic of Korea.
3. Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Republic of Korea.
4. Department of Internal Medicine, College of Medicine, Seoul National University, Seoul, Republic of Korea.
5. Department of Laboratory Medicine, Daegu Fatima Hospital, Daegu, Republic of Korea.