1. S.C. Complex Territorial Diagnostic Structure of Cagliari, Istituto Zooprofilattico Sperimentale of Sardinia, Via Dell’Acquedotto Romano, 09030 Elmas-Cagliari, Italy
2. ATS Sardegna, ASSL n°7 Sulcis, 09013 Carbonia, Italy
3. Laboratory of Clinical Diagnostics, Istituto Zooprofilattico Sperimentale of Venezie, 35020 Legnaro, Italy
4. Microbiological Food Safety and Food-Borne Diseases Unit, Department of Food Safety, Nutrition and Veterinary Public Health, National Reference Centre for Botulism, Istituto Superiore di Sanità, 00161 Rome, Italy