[1] Duke Univ Hlth Syst, Duke Heart Ctr, Durham, NC USA
[2] Univ N Carolina, Sch Nursing, Chapel Hill, NC USA
[3] Duke Univ, Sch Nursing, Box 3943, Durham, NC 27710 USA
[4] Duke Univ Hlth Syst, Durham, NC USA
[5] Duke Univ, Sch Med, Dept Med, Cardiovasc Dis, Durham, NC 27710 USA
[6] Duke Clin Res Inst, Ctr Learning Hlth Care, Duke Canc Care Res Program, Clin Trials Operat & Project Management, Durham, NC USA
[7] Duke Clin Res Inst, Ctr Learning Hlth Care, Durham, NC USA
[8] Duke Ctr Learning Hlth Care, Durham, NC USA
[9] Duke Univ, Dept Med, Durham, NC 27710 USA
[10] Duke Heart Ctr, Nursing Res Program, Durham, NC USA