1. Department of Internal Medicine, Department of Infectious Diseases, and, Clinical Research Center, National Hospital Organization Kinki-Chuo Chest Medical Center, Osaka
2. Clinical Research Center, National Hospital Organization Kinki-Chuo Chest Medical Center, Osaka
3. Department of Internal Medicine, Department of Infectious Diseases, and
4. Department of Otorhinolaryngology, Japan Community Healthcare Organization, Osaka Hospital, Osaka, Osaka, Japan
5. Department of Internal Medicine
6. Department of Internal Medicine, Clinical Research Center, National Hospital Organization Kinki-Chuo Chest Medical Center, Osaka