[1] Chippenham Hosp, Richmond, VA USA
[2] Univ Puerto Rico, Sch Med, San Juan, PR USA
[3] Meharry Med Coll, Nashville, TN USA
[4] Univ Pittsburgh, Sch Med, Pittsburgh, PA USA
[5] Univ Pittsburgh, Div Gen Internal Med, Sect Palliat Care & Med Eth, Pittsburgh, PA USA
[6] Univ Pittsburgh, Palliat Res Ctr, Pittsburgh, PA USA
[7] Chippenham Hosp, 7151 Jahnke Rd, Richmond, VA 23225 USA