1. Department of Pathology University of Pittsburgh School of Medicine Pittsburgh PA USA
2. Vitalant Pittsburgh PA USA
3. New York University School of Medicine New York NY USA
4. Hospital Israelita Albert Einstein Sao Paulo Brazil
5. Department of Obstetrics, Gynecology and Reproductive Sciences University of Pittsburgh School of Medicine Pittsburgh PA USA
6. Japanese Red Cross Society Kanto‐Koshinetsu Block Blood Center Saitama Japan
7. Department of Surgery University of Pittsburgh School of Medicine Pittsburgh PA USA
8. Japanese Red Cross Society Blood Service Headquarters Tokyo Japan