1. Coagulation Advancement Laboratory; Department of Pharmacotherapy & Outcomes Science; Virginia Commonwealth University; Richmond VA USA
2. Department of Clinical Pharmacy; Faculty of Pharmacy; Cairo University; Giza Egypt
3. Department of Pediatric Hematology/Oncology; Children's Hospital of Richmond and Virginia Commonwealth University Health System; Richmond VA USA
4. Department of Pathology and Laboratory Medicine; University of North Carolina; Chapel Hill NC USA
5. Department of Pathology; Duke University and Durham Veterans Affairs Medical Centers; Durham NC USA
6. Department of Medicine; University of North Carolina; Chapel Hill NC USA