D. Dimitroulis, “Influence of HIV virus in the hospital stay and the occurrence of postoperative complications classified according to the Clavien-Dindo classification and in comparison with the Charlson Comorbidity Index in patients subjected to urologic and general surgery operations. Our preliminary results”, Arch Ital Urol Androl, vol. 89, no. 2, pp. 125–129, Jun. 2017.