1. McArdle Laboratory for Cancer Research, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA
2. University of Wisconsin Carbone Cancer Center, Madison, WI 53705, USA
3. University of Ljubljana, 1000 Ljubljana, Slovenia
4. Department of Pathology and Laboratory Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI 53726, USA
5. Center for Immunization and Infection Research in Cancer (CIIRC), Moffit Cancer Center, Tampa, FL 33612, USA
6. Medical Microbiology Unit, University of Zimbabwe Faculty of Health Sciences, Harare P.O. Box A178, Zimbabwe
7. Department of Pathology, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA
8. IRCCS Istituto Tumori Giovanni Paolo ll, 70124 Bari, Italy
9. International Agency for Research on Cancer, 69007 Lyon, France