1. Division of Hematology/Oncology, Department of MedicineTri‐Service General Hospital, National Defense Medical Center Taipei Taiwan
2. Graduate Institute of Clinical Medicine, College of MedicineTaipei Medical University Taipei Taiwan
3. Department of Radiation Oncology, Tri‐Service General HospitalNational Defense Medical Center Taipei Taiwan
4. Division of Hematology and Oncology, Department of MedicineTaipei Medical University, Shuang Ho Hospital New Taipei City Taiwan
5. Department of Otolaryngology–Head and Neck SurgeryTri‐Service General Hospital, National Defense Medical Center Taipei Taiwan