[1] Univ N Carolina, Sch Nursing, Carrington Hall,Campus Box 7460, Chapel Hill, NC 27599 USA
[2] Univ Texas Hlth Sci Ctr, San Antonio Sch Nursing, San Antonio, TX USA
[3] Natl Univ Ireland, Sch Psychol, Hlth Behav Change Res Grp, Galway, Ireland
[4] George Washington Univ, Sch Nursing, Washington, DC USA
[5] George Washington Univ, Sch Publ Hlth, Milken Inst, Washington, DC USA