Kudsi OY, Gokcal F, Bou-Ayash N, Crawford AS, Chung SK, Chang K, Litwin D. Learning Curve in Robotic Primary Ventral Hernia Repair Using Intraperitoneal Onlay Mesh: A Cumulative Sum Analysis. Surg Laparosc Endosc Percutan Tech. 2020 Nov 20; 31(3):346-355.