1. Department of Medicine, University of Perugia, Sant’Andrea delle Fratte, 06132 Perugia, Italy.
2. Department of Diagnostic, Clinic and Public Health Medicine, University of Modena and Reggio Emilia, 41125 Modena, Italy.
3. Lesaffre International, Lesaffre Group, 147 rue Gabriel Péri, 59700 Marcq-en-Baroeul, France.
4. Department of Veterinary Medicine, University of Perugia, 06126 Perugia, Italy.
5. Lesaffre Human Care, Lesaffre Group, 137 rue Gabriel Péri, 59700 Marcq-en-Baroeul, France.