1. Department of Otorhinolaryngology Kaohsiung Medical University Hospital, Kaohsiung Medical University Kaohsiung Taiwan
2. Department of Otorhinolaryngology, School of Medicine, College of Medicine Kaohsiung Medical University Kaohsiung Taiwan
3. Department of Biological Science and Technology National Chiao Tung University Hsinchu Taiwan
4. Department of Otorhinolaryngology, School of Post‐Baccalaureate Medicine, College of Medicine Kaohsiung Medical University Kaohsiung Taiwan