[1] Osped Mauriziano Umberto 1, UO Gastroenterol & Endoscopia Digest, I-10128 Turin, Italy
[2] Osped Mauriziano Umberto 1, Serv Anat Patol, I-10128 Turin, Italy
[3] Osped Mauriziano Umberto 1, UO Chirurg 1, I-10128 Turin, Italy
[4] Univ Turin, Clin Chirurg 1, Turin, Italy
[5] Univ Turin, Dipartimento Nutr Anim, Fac Vet, Turin, Italy
[6] CPO, Turin, Italy