Caravatta, L. et al. 2019. Magnetic resonance imaging (MRI) compared with computed tomography (CT) for interobserver agreement of gross tumor volume delineation in pancreatic cancer: a multi-institutional contouring study on behalf of the AIRO group for gastrointestinal cancers. Acta Oncologica. 58, 4 (Apr. 2019), 439–447. DOI:https://doi.org/10.1080/0284186X.2018.1546899.