1. PROMISE Department, University of Palermo, 90127 Palermo, Italy
2. U.O.C. of Clinical Pathology Buccheri La Ferla Hospital FBF, 90123 Palermo, Italy
3. U.O.C. Epidemiologia Clinica con Registro Tumori, Azienda Ospedaliera Universitaria Policlinico di Palermo, 90127 Palermo, Italy
4. Experimental Zooprophylactic Institute of Sicily, 90129 Palermo, Italy
5. Department of Ecological and Biological Sciences, Tuscia University, 01100 Viterbo, Italy
6. Section of Parasitology, Department of Public Health and Infectious Diseases, University Hospital “Policlinico Umberto I”, Sapienza-University of Rome, 00185 Rome, Italy