1. Department of Respiration, No. 305 Hospital of PLA, Beijing, China
2. Department of Pathology, Zhongda Hospital Southeast University, Nanjing, Jiangsu, 210009, China
3. Department of Endocrinology, No. 305 Hospital of PLA, Beijing, 100017, China
4. Department of Gerontology, No. 305 Hospital of PLA, Beijing, 100017, China