[1] UPMC Canc Ctr, Magee Womens Hosp, Pittsburgh, PA USA
[2] Univ Pittsburgh, Med Ctr, Pittsburgh, PA USA
[3] Univ Pittsburgh, Med Ctr, Palliat & Support Inst, Sect Palliat Care & Med Eth, Pittsburgh, PA USA
[4] Univ Pittsburgh, Sch Med, Pittsburgh, PA USA
[5] Univ Pittsburgh, Pittsburgh, PA USA
[6] Univ Pittsburgh, Med Ctr, Dept Med, Pittsburgh, PA USA
[7] Univ Pittsburgh, Sect Palliat Care & Med Eth, Div Gen Internal Med, Pittsburgh, PA USA