[1] Seoul Wolchon Elementary Sch, Seoul, South Korea
[2] Chungnam Natl Univ, Daejeon, South Korea
[3] Inst Hlth Sci Res, Coll Nursing, Busan, South Korea
[4] Inje Univ, Inst Hlth Sci Res, Coll Nursing, Gimhae, Gyeongsangnamdo, South Korea
[5] Inje Univ, Inje Inst Hosp & Palliat Care IHPC, Gimhae, Gyeongsangnamdo, South Korea
[6] Univ Ulsan, Asan Inst Life Sci, Coll Med, Asan Med Ctr,Clin Res Ctr, Seoul, South Korea
[7] Chungnam Natl Univ, Grad Sch, Coll Nursing, Daejeon, South Korea
[8] Ewha Womans Univ, Coll Nursing, Div Nursing, Seoul, South Korea