National implementation of an optimal standardised technique for right-sided colon cancer: protocol of an interventional sequential cohort study (Right study).

"Declarations Conflict of interestThe authors declare there are no conflicts of interest. Ethics approval and consent to participateThe trial will be conducted according to Good Clinical Practice guidelines and the principles of the declaration of Helsinki (2013, [19]) and in accordance with the Medical Research Involving Human Subjects Act (WMO) and other guidelines, regulations and acts. The study has been approved by the Medical Ethical Committee of the Amsterdam UMC, location VUmc (phase 1–3: METC 2021.0273, 4 July 2021 and phase 4–5: METC 2022.0328, 20 January 2023). The protocol is registered by ClinicalTrials.gov (NCT04889456). For all other participating centres, approval of the local ethical committee and/or board of director has been obtained. Written informed consent will be obtained from all participants. Consent for publicationNot applicable. Conflict of interest The authors declare there are no conflicts of interest."

"Trial registration ClinicalTrials.gov: NCT04889456, May 2021."