1. Department of Pediatrics; Inova Children's Hospital; Falls Church Virginia
2. Blood Transfusion Service Zurich; Swiss Red Cross (SRC); Zürich-Schlieren Switzerland
3. Inova Schar Cancer Institute Apheresis Service, Inova Blood Donor Services; Inova Donor Services; Sterling Virginia
4. Blood Bank and Transfusion Service; Inova Fairfax Hospital; Falls Church Virginia
5. Diagnostic laboratories; BloodCenter of Wisconsin; Milwaukee Wisconsin
6. Department of Hematology-Oncology; Pediatric Specialists of Virginia; Falls Church Virginia
7. Department of Pediatrics; George Washington University School of Medicine; Washington District of Columbia
8. Virginia Commonwealth University School of Medicine-Inova Campus; Falls Church Virginia