1. Department of Endoscopy, Tuberculosis Hospital of Shaanxi Province, The Fifth People's Hospital of Shaanxi Province, Xi'an, China.
2. Department of Elderly Respiratory Medicine, Shaanxi Provincial People's Hospital, Xi'an, China.
3. Department of Oncology Medicine, Shaanxi Provincial People's Hospital, Xi'an, China.
4. Department of Equipment Section, Tuberculosis Hospital of Shaanxi Province, The Fifth People's Hospital of Shaanxi Province, Xi'an, China.
5. Department of Radiology, Tuberculosis Hospital of Shaanxi Province, The Fifth People's Hospital of Shaanxi Province, Xi'an, China.