[1] Univ Illinois, Harriett H Werley Endowed Chair Nursing Res, Chicago, IL 60612 USA
[2] Univ Illinois, Ctr Excellence End Of Life Transit Res, Chicago, IL 60612 USA
[3] Univ Illinois, Chicago, IL 60612 USA
[4] Jesse Brown Vet Adm Med Ctr, Chicago, IL USA
[5] Ann & Robert H Lurie Childrens Hosp Chicago, Sickle Cell Program, Chicago, IL USA
[6] Rockford Hlth Syst, Chicago, IL USA
[7] Northwestern Univ, Feinberg Sch Med, Chicago, IL 60611 USA
[8] Ann & Robert H Lurie Childrens Hosp Chicago, Hematol Sect, Chicago, IL USA