[1] Chang Gung Univ Sci & Technol, Dept Nursing, Taoyuan 333, Taiwan
[2] Natl Taiwan Univ, Coll Med, Sch Nursing, Taipei 10764, Taiwan
[3] Chang Gung Mem Hosp LinKou, Chang Gung Med Fdn, Dept Otorhinolaryngol Head & Neck Surg, Taoyuan, Taiwan
[4] Chang Gung Univ, Coll Med, Taoyuan, Taiwan
[5] Chang Gung Mem Hosp LinKou, Chang Gung Med Fdn, Dept Radiat Oncol, Taoyuan, Taiwan
[6] Chang Gung Mem Hosp LinKou, Chang Gung Med Fdn, Head & Neck Oncol Grp, Taoyuan, Taiwan