Che-Pin Lin1, Yung-Chuan Sung2, Cheng-Yu Lo3, Ming-Hong Yen4. 1. Division of Hematology/Oncology, Department of Medicine, Cathay General Hospital, Taipei, Taiwan. 2. Division of Hematology/Oncology, Department of Medicine, Cathay General Hospital, Taipei, Taiwan; School of Medicine, College of Medicine, Fu-Jen Catholic University, Taipei, Taiwan. Electronic address: yungchuans@cgh.org.tw. 3. Division of Surgical Pathology, Department of Pathology, Cathay General Hospital, Taipei, Taiwan. 4. Division of Thoracic Surgery, Department of Surgery, Cathay General Hospital, Taipei, Taiwan.