[1] Asan Med Ctr, Dept Nursing, Seoul, South Korea
[2] Yonsei Univ, Mo Im Kim Nursing Res Inst, Coll Nursing, Seoul, South Korea
[3] Univ Ulsan, Asan Med Ctr, Dept Oncol, Coll Med, Seoul, South Korea
[4] Yonsei Univ, Coll Nursing, 50-1 Yonsei Ro, Seoul 03722, South Korea
[5] Yonsei Univ, Mo Im Kim Nursing Res Inst, 50-1 Yonsei Ro, Seoul 03722, South Korea