[1] Duke Clin Res Inst, Duke Ctr Learning Hlth Care, Durham, NC USA
[2] Duke Canc Inst, Durham, NC USA
[3] Four Seasons Compass Life, Flat Rock, NC USA
[4] Univ Alabama Birmingham, Birmingham, AL USA
[5] Mayo Clin, Rochester, MN USA
[6] Amer Acad Hosp & Palliat Med, Rosemont, IL USA
[7] Univ Pittsburgh, Pittsburgh, PA USA
[8] Univ Kansas, Kansas City, KS USA