1. Sol Sherry Thrombosis Research CenterTemple University School of MedicinePhiladelphiaPennsylvania19140USA
2. Department of Pathology and Laboratory MedicineTemple University School of MedicinePhiladelphiaPennsylvania19140USA
3. VIIth Department of Internal MedicineSilesian Medical SchoolKatowicePoland
4. Department of MedicineTemple University School of MedicinePhiladelphiaPennsylvania19140USA
5. Department of Digestive Diseases and NutritionUniversity of North CarolinaChapel HillNorth Carolina27599USA
6. Dupont Merck Pharmaceutical Company, Experimental StationWilmingtonDelaware19880USA
7. Department of PharmacyUniversity of MontrealMontrealQuebecCanadaH3C 3J7
8. Department of PhysiologyTemple University School of MedicinePhiladelphiaPennsylvania19140USA