1. Department of Microbiology and Immunology, Brody School of Medicine at East Carolina University, Greenville, NC 27858, USA
2. Department of Biomedical and Neuromotor Sciences, Università di Bologna, Bologna, Italy
3. Department of Medicine and Surgery, Re.Mo.Bio.S. Laboratory, Anatomy Section, University of Parma, Parma, Italy
4. Department of Molecular Physiology and Neurobiology, University of Wroclaw, Wroclaw, Poland