[1] Duke Univ, Durham, NC 27710 USA
[2] Duke Univ, Sch Nursing, Ctr Nursing Res, Durham, NC 27710 USA
[3] Duke Univ, Sch Nursing, 307 Trent Dr, Durham, NC 27710 USA
[4] San Diego State Univ, Sch Publ Hlth, San Diego, CA 92182 USA
[5] Univ Mississippi, Med Ctr, Sch Nursing, Jackson, MS 39216 USA
[6] Behav Assessment Inc, Los Angeles, CA USA