1. Department of Radiology, China‑Japan Friendship Hospital, Beijing 100029, P.R. China
2. Department of Radiology, China‑Japan Friendship Hospital of Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100029, P.R. China
3. Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China‑Japan Friendship Hospital, Beijing 100029, P.R. China
4. Department of Radiology, Peking University China‑Japan Friendship School of Clinical Medicine, Beijing 100029, P.R. China