[1] Chang Gung Univ, Coll Med, Sch Nursing, Taoyuan, Taiwan
[2] Chang Gung Mem Hosp, Clin Trial Ctr, Linkou Branch, Taoyuan, Taiwan
[3] Chang Gung Univ, Chang Gung Mem Hosp Linkou, Dept Obstet & Gynecol, Coll Med, Taoyuan, Taiwan
[4] Chang Gung Univ, Clin Informat & Med Stat Res Ctr, Taoyuan, Taiwan
[5] Chang Gung Mem Hosp, Linkou Branch, Dept Internal Med, Div Med Oncol, Taoyuan, Taiwan
[6] Chang Gung Univ Sci & Technol, Dept Nursing, Taoyuan, Taiwan