[1] SSM Hlth Cardinal Glennon Childrens Hosp, St Louis, MO USA
[2] Univ Minnesota, Dept Lab Med & Pathol, Minneapolis, MN 55455 USA
[3] Childrens Hosp Colorado, Pathol & Lab Med, Aurora, CO USA
[4] Seattle Childrens Hosp & Bloodworks, Seattle, WA USA
[5] Alfred I DuPont Hosp Children, Nemours, Wilmington, DE USA
[6] Innovat Blood Resources, St Paul, MN USA
[7] Washington Univ, Barnes Jewish Hosp, St Louis, MO USA
[8] Univ Toronto, Toronto, ON, Canada
[9] Childrens Hosp Los Angeles, Dept Pathol & Lab Med, Transfus Med Sect, Los Angeles, CA 90027 USA