1. Division of Pulmonary and Critical Care Medicine, Departments of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
2. Department of Laboratory Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
3. Department of Thoracic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
4. Korean Institute of Tuberculosis, Korean National Tuberculosis Association, Seoul, Korea.
5. Department of Microbiology and Immunology, and Cancer Research Institute, College of Medicine, Seoul National University, Seoul, Korea.