Sara Lauricella, Marco Caricato, Gianluca Mascianà, Massimo Ciccozzi, Silvia Angeletti, and Gabriella Teresa Capolupo, “Cost-effectiveness analysis of O-Ring wound retractor in elective laparoscopic colorectal surgery”, Ann Ital Chir, vol. 92, no. 4, pp. 460–464, Jul. 2021.