1. Department of Medicine, Division of Gastroenterology, University of Massachusetts Medical School, Worcester, Massachusetts.
2. Department of Cancer Biology, University of Massachusetts Medical School, Worcester, Massachusetts.
3. Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts.
4. Laboratory of Pathology, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece.
5. University of Massachusetts GSBS, Worcester, Massachusetts.
6. Department of Medicine, Division of Infectious Disease, University of Massachusetts Medical School, Worcester, Massachusetts.
7. Department of Medicine, Division of Hematology/Oncology, University of Massachusetts Medical School, Worcester, Massachusetts.