603.E33 Clinical gastroenterology and hepatology, 21(3), 581-603.e33. W.B. Saunders Ltd Associazione Italiana Familiarit? Ereditariet? Tumori, Collaborative Group of the Americas on Inherited Gastrointestinal Cancer & European Hereditary Tumour Group, and the International Society for Gastrointestinal Hereditary Tumours 2023, ' Delphi Initiative for Early-Onset Colorectal Cancer (DIRECt) International Management Guidelines ', Clinical Gastroenterology and Hepatology, vol. 21, no. 3, pp. 581-603.e33 . https://doi.org/10.1016/j.cgh.2022.12.006 Clinical Gastroenterology and Hepatology, 21(3), 581-603.e33. W.B. Saunders Ltd