1. Department of Specialistic, Diagnostic and Experimental Medicine; Institute of Haematology ‘L. and A. Seràgnoli’; St Orsola-Malpighi Hospital; University of Bologna; Bologna Italy
2. Division of Neurosurgery; Bellaria Hospital; Bologna Italy
3. Department of Internal Medicine; IRCCS Policlinico San Matteo Foundation; University of Pavia; Pavia Italy