Validation of the Southampton Difficulty Scoring System in Robotic Liver Surgery and Development of the International RoboLiver Difficulty Scoring System.

El Adel S, Pilz da Cunha G, Liu R, Sucandy I, Di Benedetto F, D'Hondt M, Vrochides D, Croner R, Sparrelid E, Ratti F, Geller D, Gallagher TK, Goh BKP, Jovine E, Ahmad J, Ruzzenente A, Campos RR, White S, Efanov M, Memeo R, Cillo U, Alzoubi M, Schmelzle M, Alseidi A, van Dieren S, Swijnenburg RJ, Abu Hilal M