1. Research Unit on Implant Infections, Rizzoli Orthopaedic Institute, Via di Barbiano 1/10, 40136 Bologna, Italy
2. Department of Experimental Pathology of the University of Bologna, Via S. Giacomo 14, 40126 Bologna, Italy
3. Department of Biochemistry of the University of Pavia, Viale Taramelli 3/b, 27100 Pavia, Italy
4. Clinical Orthopaedic & Traumatology Unit II, Rizzoli Orthopaedic Institute, via G.C. Pupilli 1, 40136 Bologna, Italy