1. Department of Otolaryngology; Taipei Medical University Hospital; Taipei Taiwan
2. Department of Otolaryngology; Taipei Medical University-Shuang Ho Hospital; Taipei Taiwan
3. Sleep Research Center; Taipei Medical University Hospital; Taipei Taiwan
4. School of Medical Laboratory Sciences and Biotechnology; Taipei Medical University; Taipei Taiwan
5. School of Health Sciences; Purdue University; West Lafayette Indiana U.S.A
6. Division of Urology; Department of Surgery; Far Eastern Memorial Hospital; New Taipei City Taiwan