Towards an AI-based assessment model of surgical difficulty during early phase laparoscopic cholecystectomy. - Abbing, Julian. R.; Voskens, Frank J.; Gerats, Beerend G. A.; Egging, Ruby M.; Milletari, Fausto; Broeders, Ivo A.M.J. (Computer Methods in Biomechanics & Biomedical Engineering: Imaging & Visualisation, 2023)