[1] Univ Kentucky, Coll Nursing, Lexington, KY 40536 USA
[2] Univ Ulsan, Dept Nursing, Coll Med, Ulsan 680749, South Korea
[3] Univ N Carolina, Sch Nursing, Chapel Hill, NC USA
[4] Emory Univ, Sch Nursing, Atlanta, GA 30322 USA
[5] Univ Michigan, Sch Nursing, Ann Arbor, MI 48109 USA