[1] Natl Cheng Kung Univ, Coll Med, Inst Allied Hlth Sci, Tainan, Taiwan
[2] Chi Mei Med Ctr, Med Intens Care Unit, Tainan, Taiwan
[3] Univ Washington, Sch Nursing, Seattle, WA 98195 USA
[4] Natl Cheng Kung Univ Hosp, Dept Nursing, Tainan, Taiwan
[5] Natl Cheng Kung Univ, Dept Nursing, 1 Univ Rd, Tainan 70101, Taiwan