1. Department of PathologyUniversity of Pittsburgh Pittsburgh Pennsylvania
2. Vitalant Pittsburgh Pennsylvania
3. Division of Pathology and Laboratory MedicineChildren's National Medical Center Washington District of Columbia
4. Department of Pathology and PediatricsGeorge Washington University Medical School Washington District of Columbia
5. NHS Blood and Transfusion Birmingham UK
6. Department of Pathology and Laboratory MedicineDartmouth‐Hitchcock Medical Center Lebanon New Hampshire
7. Department of HematologySultan Qaboos University Hospital Muscat Oman
8. Department of PediatricsUniversity of Pittsburgh School of Medicine Pittsburgh Pennsylvania
9. Transfusion Research UnitSchool of Public Health and Preventive Medicine, Monash University Melbourne Australia
10. Department of Clinical HaematologyMonash Health Melbourne Australia
11. Rabin Medical CenterBlood Services and Apheresis Institute Petah Tiqva Israel
12. Department of Obstetrics, Gynecology and Reproductive SciencesUniversity of Pittsburgh School of Medicine Pittsburgh Pennsylvania