Clinical practice guidelines for the management of non-functioning advanced GEP-NENs: a GRADE approach for evidence evaluation and recommendations by the Italian Association of Medical Oncology (AIOM) in collaboration with the Italian Association for Neuroendocrine Tumors (ITANET). - Spada F; Gelsomino F; Rinzivillo M; Cinquini M; Fittipaldo VA; Tralongo A; Moschetti I; Albertelli M; Ambrosini V; Amoroso V; Antonuzzo L; Badalamenti G; et al. (ESMO open, 2025)