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Affiliations

• ¹ Catalonian Cancer Strategy, Department of Health, Government of Catalonia, Avenida Gran Via de l'Hospitalet, Barcelona, Spain, Biomedical Research Institute of Bellvitge (IDIBELL), University of Barcelona, Barcelona, Spain.
• ² Department of Gastrointestinal Surgery, Institute of Digestive and Metabolic Diseases (ICMDM), Hospital Clinic, IDIBAPS, Biomedical Research Centre (CIBERehd), Esther Koplowitz Centre, University of Barcelona, Carrer Villaroel, Barcelona, Spain.
• ³ Colorectal Surgery Unit, Department of Surgery, Hospital del Mar (IMIM), Barcelona, Spain.
• ⁴ Colorectal Surgery Unit, Vall d'Hebron University Hospital, Pº de la Vall d'Hebron, Barcelona, Spain.
• ⁵ Surgery Unit, Hospital de la Santa Creu i Sant Pau, C/de Sant Quintí, Barcelona, Spain.
• ⁶ Biomedical Research Institute of Bellvitge (IDIBELL), University of Barcelona, C/Feixa Llarga, s/n, L'Hospitalet de Llobregat, Barcelona, Spain, Colorectal Unit, Department of General and Digestive Surgery, Bellvitge University Hospital, C/Feixa Llarga, s/n, Barcelona, Spain.
• ⁷ Catalonian Cancer Strategy, Department of Health, Government of Catalonia, Avenida Gran Via de l'Hospitalet, L'Hospitalet de Llobregat, Barcelona, Spain, Biomedical Research Institute of Bellvitge (IDIBELL), University of Barcelona, C/Feixa Llarga, s/n,, Barcelona, Spain.
• ⁸ Statistics Advisory Service, Biomedical Research Institute of Bellvitge (IDIBELL), University of Barcelona, C/Feixa Llarga, s/n, L'Hospitalet de Llobregat, Barcelona, Spain, Basic Clinical Practice Department, University of Barcelona, C/Feixa Llarga, s/n, L'Hospitalet de Llobregat, Barcelona, Spain.
• ⁹ Statistics Advisory Service, Biomedical Research Institute of Bellvitge (IDIBELL), University of Barcelona, C/Feixa Llarga, s/n, L'Hospitalet de Llobregat, Barcelona, Spain.
• ¹⁰ General Surgery Unit, Nicola Giannettasio Hospital, Via Ippocrate, Corigliano-Rossano, Italy, La Sapienza University, Roma, Italy.
• ¹¹ Department of Gastrointestinal Surgery, Institute of Digestive and Metabolic Diseases (ICMDM), Hospital Clinic, IDIBAPS, Biomedical Research Centre (CIBERehd,), Esther Koplowitz Centre, University of Barcelona, Carrer Villaroel, Barcelona, Spain.
• ¹² Health Service Procurement and Assessment, Catalonian Health Service (CatSalut), Travessera de les Corts, Barcelona, Spain.
• ¹³ Catalonian Cancer Strategy, Department of Health, Government of Catalonia, Biomedical Research Institute of Bellvitge (IDIBELL), Barcelona, Spain.