1. Department of Otolaryngology, Taipei Medical University, Shuang-Ho Hospital, No. 291, Jhong-Jheng Road, Jhonghe District, New Taipei City 23561, Taiwan
2. Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei City, Taiwan
3. Department of Preventive and Community Medicine, Taipei Medical University, Shuang-Ho Hospital, No. 291, Jhong-Jheng Road, Jhonghe District, New Taipei City 23561, Taiwan