Laparoscopic insertion of various shaped trocars in a porcine model - Moreno, Danilo Galante; Pereira, Cesar Augusto Martins; Anna, Ricardo Kyoiti Sant; Azevedo, Rafael Ulysses de; Savio, Luiz Felipe; Duarte, Ricardo Jordao; Srougi, Miguel; Passerotti, Carlo Camargo (Jsls-journal of the society of laparoendoscopic surgeons, 2019)