1. Department of Neuroscience, Section Medical Physiology; University of Groningen, University Medical Center Groningen; Groningen The Netherlands
2. Department of Pathology, University of Groningen; University Medical Center Groningen; Groningen The Netherlands
3. Alternatives Unit, Biomedical Primate Research Centre; Rijswijk The Netherlands
4. Department of Microbiology and Immunology; Geisel School of Medicine at Dartmouth, Norris Cotton Cancer Center; Lebanon New Hampshire