1. University of Texas Medical Branch; Galveston
2. University of Alabama at; Birmingham
3. University of Puerto Rico Medical Science Campus; San Juan
4. Bleeding and Clotting Disorders Institute; Peoria Illinois
5. Johns Hopkins University School of Medicine; Baltimore Maryland
6. Inova Diagnostics; San Diego California
7. TheraTest Laboratories; Lombard Illinois
8. University of Texas Health Science Center at; Houston