1. Department of Respiratory Diseases, Nanjing Drum Tower Hospital Affiliated to Medical School of Nanjing University, Nanjing, Jiangsu 210008, P.R. China
2. Department of Oncology and Hematology, China‑Japan Union Hospital Affiliated to Jilin University, Changchun, Jilin 130031, P.R. China
3. Department of Pathology, Nanjing Drum Tower Hospital Affiliated to Medical School of Nanjing University, Nanjing, Jiangsu 210008, P.R. China