1. IRCCS Istituto delle Scienze Neurologiche di Bologna Bologna Italy
2. Department of Biomedical and Neuromotor Sciences (DIBINEM) University of Bologna Bologna Italy
3. Department of Pathology IRCCS Istituto Ortopedico Rizzoli Bologna Italy
4. Dipartimento Interaziendale Anatomia Patologica, Pathology Unit, Maggiore Hospital AUSL Bologna Bologna Italy
5. Anatomic Pathology Unit, Department of Pathology and Laboratory Medicine Mayo Clinic Rochester Minnesota USA
6. Department of Pathology and Laboratory Medicine, School of Medicine and Public Health University of Wisconsin Madison Michigan USA
7. Dipartimento Interaziendale Anatomia Patologica, Unit of Anatomic Pathology AUSL Bologna Bologna Italy