[1] Taipei Med Univ Hosp, Dept Neurosurg, Taipei, Taiwan
[2] Taipei Med Univ, Sch Med, Taipei, Taiwan
[3] Far Eastern Mem Hosp, Dept Nursing, New Taipei, Taiwan
[4] Far Eastern Memorial Hosp, Div Neurosurg, Dept Surg, New Taipei, Taiwan
[5] Taipei Med Univ, Coll Nursing, Sch Nursing, 250 Wuxing St, Taipei 110, Taiwan
[6] Taipei Med Univ Hosp, Dept Tradit Chinese Med, Taipei, Taiwan
[7] Taipei Med Univ Hosp, Dept Nursing, Taipei, Taiwan
[8] En Chu Kong Hosp, Dept Nursing, New Taipei, Taiwan
[9] Chang Gung Mem Hosp, Dept Neurosurg, Keelung, Taiwan
[10] Community Med Res Ctr, Keelung Branch, Keelung, Taiwan
[11] Taipei Med Univ, Coll Publ Hlth, Sch Publ Hlth, Taipei, Taiwan
[12] Taipei Med Univ, Coll Med, Res Ctr Sleep Med, Taipei, Taiwan