Development of a Laparoscopic Box Trainer Based on Open Source Hardware and Artificial Intelligence for Objective Assessment of Surgical Psychomotor Skills. - Alonso-Silverio GA; Pérez-Escamirosa F; Bruno-Sanchez R; Ortiz-Simon JL; Muñoz-Guerrero R; Minor-Martinez A; Alarcón-Paredes A (Surgical innovation, 2018)