1. Department of Geriatric Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University , Jinan, Shandong Province 250100, China
2. The National Hospital of Enshi Tujia and Miao Autonomous Prefecture , 178 Hangkong Dadao, Enshi City, Hubei Province 445000, China
3. Department of Respiratory and Critical Care Medicine, Minda Hospital of Hubei Minzu University , Enshi City, Hubei province 445000, China
4. Hematology Department, The National Hospital of Enshi Tujia and Miao Autonomous Prefecture , 178 Hangkong Dadao, Enshi City 445000, China
5. Yichang Hubo Medical Research Institute , Yichang, Hubei Province 443000, China