[1] Yonsei Univ, Mo Kim Nursing Res Inst, Coll Nursing, Seoul, South Korea
[2] Yonsei Univ, Coll Nursing, Brain Korea 21 FOUR Project, Seoul, South Korea
[3] Yonsei Univ, Coll Nursing, Seoul, South Korea
[4] Univ Massachusetts Lowell, Solomont Sch Nursing, 113 Wilder St, Lowell, MA 01854 USA