1. Department of Pathology University of Pittsburgh Pittsburgh Pennsylvania USA
2. Trauma and Transfusion Medicine Research Center, Department of Surgery University of Pittsburgh Pittsburgh Pennsylvania USA
3. Division of Trauma and Acute Care Surgery, Department of Surgery University of Alabama at Birmingham Birmingham Alabama USA
4. Department of Obstetrics and Gynecology Penn State College of Medicine Hershey Pennsylvania USA
5. Allo Hope Foundation Tuscaloosa Alabama USA
6. Department of Obstetrics, Gynecology and Reproductive Sciences University of Pittsburgh School of Medicine Pittsburgh Pennsylvania USA
7. Division of Emergency Medicine, Department of Pediatrics The Ohio State College of Medicine Columbus Ohio USA