[1] Childrens Hosp New Orleans, Pediat Palliat Care Serv Line, New Orleans, LA 70118 USA
[2] Louisiana State Univ, Dept Pediat, Hlth Sci Ctr, New Orleans, LA USA
[3] Tulane Univ, Dept Pediat, Sch Med, New Orleans, LA USA
[4] Cncinnati Childrens Hosp Med Ctr, Dept Anesthesia, Cincinnati, OH USA
[5] S Jude Childrens Res Hosp, Dept Biostat, Memphis, TN USA
[6] Thomas Jefferson Univ, Dept Pediat, Sidney Kimmel Med Coll, Philadelphia, PA USA
[7] Nemours Childrens Hlth, Div Palliat Med, Wilmington, DE USA
[8] St Jude Childrens Res Hosp, Dept Oncol, Memphis, TN USA
[9] Childrens Hosp New Orleans, Div Palliat Med, 200 Henry Clay Ave, New Orleans, LA 70118 USA