Division of Hematology and Oncology, Department of internal medicine, China Medical University Hospital, China Medical University, 2 Yude Rd, North District, Taichung, 404, Taiwan. Division of Radiation Oncology, China Medical University Hospital, China Medical University, Taichung, 404, Taiwan. Department of Otorhinolaryngology, China Medical University Hospital, China Medical University, Taichung, 404, Taiwan. Division of Hematology and Oncology, Department of internal medicine, China Medical University Hospital, China Medical University, 2 Yude Rd, North District, Taichung, 404, Taiwan. linchin13256@gmail.com. Graduate Institute of Biomedical Sciences, China Medical University, Taichung, 404, Taiwan. linchin13256@gmail.com.