[1] Duke Univ, Sch Nursing, 307 Trent Dr, Durham, NC 27710 USA
[2] Duke Canc Inst, Canc Control & Populat Sci, 20 Duke Med Cir, Durham, NC 27710 USA
[3] Duke Univ, Sch Med, Duke Off Clin Res, 2200 West Main St 10th Floor,Suite 1000, Durham, NC 27705 USA
[4] Duke Univ, Sch Med, Dept Community & Family Med, 2100 Erwin Rd, Durham, NC 27705 USA
[5] Michigan State Univ, Coll Nursing, 1355 Bogue St, E Lansing, MI 48824 USA
[6] Duke Univ, Sch Med, Dept Populat Hlth Sci, 2200 West Main St,Suite 720A, Durham, NC 27707 USA