1. Clinical Research Center, National Masan Tuberculosis Hospital, Masan, Korea.
2. Department of Thoracic Medicine, Seobuk Hospital, Seoul, Korea.
3. Department of Thoracic Surgery, National Mokpo Tuberculosis Hospital, Mokpo, Korea.
4. Department of Internal Medicine, Pusan National University Yangsan Hospital, Yangsan, Korea.
5. Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.