European Journal of Cancer, 185, pp. 28-39 European Journal of Cancer, 185, 28-39. Pergamon European Journal of Cancer, 185, 28-39. Elsevier Ltd. Scientia European Journal of Cancer, 185, 28-39 Kroese, T E, van Laarhoven, H W M, Schoppman, S F, Deseyne, P R A J, van Cutsem, E, Haustermans, K, Nafteux, P, Thomas, M, Obermannova, R, Mortensen, H R, Nordsmark, M, Pfeiffer, P, Elme, A, Adenis, A, Piessen, G, Bruns, C J, Lordick, F, Gockel, I, Moehler, M, Gani, C, Liakakos, T, Reynolds, J, Morganti, A G, Rosati, R, Castoro, C, Cellini, F, D'Ugo, D, Roviello, F, Bencivenga, M, de Manzoni, G, van Berge Henegouwen, M I, Hulshof, M C C M, van Dieren, J, Vollebergh, M, van Sandick, J W, Jeene, P, Muijs, C T, Slingerland, M, Voncken, F E M, Hartgrink, H, Creemers, G J, van der Sangen, M J C, Nieuwenhuijzen, G, Berbee, M, Verheij, M, Wijnhoven, B, Beerepoot, L V, Mohammad, N H, Mook, S, Ruurda, J P & the OMEC collaborators 2023, ' Definition, diagnosis and treatment of oligometastatic oesophagogastric cancer : A Delphi consensus study in Europe ', European Journal of Cancer, vol. 185, pp. 28-39 . https://doi.org/10.1016/j.ejca.2023.02.015 the OMEC collaborators 2023, ' Definition, diagnosis and treatment of oligometastatic oesophagogastric cancer : A Delphi consensus study in Europe ', European Journal of Cancer, vol. 185, pp. 28-39 . https://doi.org/10.1016/j.ejca.2023.02.015