S-Y Chen1, N-F Chen1, C-S Lu2. 1. Department of Surgery, Kaohsiung Armed Forces General Hospital, Kaohsiung, TaiwanDepartment of Internal Medicine, Kaohsiung Armed Forces General Hospital, Kaohsiung, Taiwan and Division of Hematology/Oncology, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan. 2. chengsem@gmail.com.