Learning curve of three European centers in laparoscopic, hybrid laparoscopic, and robotic pancreatoduodenectomy

P. Tyutyunnik, Sjors Klompmaker, Carlo Lombardo, Hryhoriy Lapshyn, Francesca Menonna, Niccolò Napoli, Ulrich F. Wellner, R. E. Izrailov, M. Baychorov, Marc G. Besselink, Moh’d Abu Hilal, Abe Fingerhut, Ugo Boggi, Tobias Keck, I. E. Khatkov