1. Department of Pathology, Faculty of Medicine and Surgery, University of Malta, Tal-Qroqq, Msida, Malta
2. Special Coagulation Laboratory, Division of Hematopathology, Department of Laboratory Medicine and Pathology, College of Medicine, Mayo Clinic, Rochester, Minnesota
3. Division of Gastroenterology and Hepatology, Department of Internal Medicine, College of Medicine, Mayo Clinic, Rochester, Minnesota