Title {1}	Patient-individualized resection planning in liver surgery using 3D print and virtual reality (VR) – a prospective randomized controlled study
Trial registration {2a and 2b}	Prospective trials registration at the German Clinical Trials register with the registration number DRKS00027865, registration confirmed 24th of January 2022, https://www.drks.de/drks_web/
Protocol version {3}	Version 4.0, dated 15th of November 2021
Funding {4}	The study is supported by a German Research Foundation (DFG) grant over 188.200€ (project number: 490729183)
Author details {5a}	Tobias Huber1, Laura Isabel Hanke1, Christian Boedecker1, Lukas Vradelis1, Janine Baumgart1, Stefan Heinrich1, Fabian Bartsch1, Jens Mittler 1, Alicia Schulze2, Christian Hansen3, Florentine Hüttl1, Hauke Lang1 1Department of General, Visceral and Transplant Surgery, University Medical Center Mainz 2 Institute of Medical Biostatistics, Epidemiology and Informatics (IMBEI), University Medical Center Mainz 3Institute of Simulation and Graphics, Faculty of Informatics, University Magdeburg
Name and contact information for the trial sponsor {5b}	University Medical Center of the Johannes Gutenberg-University Mainz Langenbeckstrasse 1 55131 Mainz, Germany
Role of sponsor {5c}	The sponsor and funders have no role in the design of the study, collection, analysis or interpretation of the data, neither in the writing of the manuscript. The trial is designed and will be conducted, analysed, interpreted and written by the afore mentioned study team.