[1] Triserv Gen Hosp, Dept Otolaryngol Head & Neck Surg, Natl Def Med Ctr, 325,Cheng Kung Rd Sect 2, Taipei 114, Taiwan
[2] Far Eastern Mem Hosp, Dept Psychiat, New Taipei, Taiwan
[3] Taipei Med Univ, Grad Inst Clin Med, Shuang Ho Hosp, Taipei, Taiwan
[4] Taipei Med Univ, Dept Otolaryngol, Shuang Ho Hosp, Taipei, Taiwan