1. Center for Genomic Sciences Allegheny-Singer Research Institute, Pittsburgh, Pennsylvania - USA
2. Research Unit on Implant Infections, Rizzoli Orthopedic Institute, Bologna - Italy
3. Experimental Pathology Department, University of Bologna, Bologna - Italy
4. Department of Biomedical Sciences, Tufts University Cummings School of Veterinary Medicine, North Grafton, Massachusetts - USA