[1] Ist Ortoped Rizzoli, Lab Neuromuscular Pathol, Bologna, Italy
[2] Univ Siena, Inst Neurol Sci, Neuropathol Lab, I-53100 Siena, Italy
[3] CNR Bologna, Inst Normal & Pathol Cytomorphol, Bologna, Italy
[4] Univ Bologna, ORL Clin, Bologna, Italy
[5] Bulgarian Acad Sci, Inst Mol & Cell Biol, Sofia, Bulgaria
[6] Edith Cowan Univ, Perth, WA, Australia