Skinnerup Byskov C, Mortensen HR, Biston M-C, Broggi S, Bütof R, Canters R, et al. Radiotherapy quality assurance in the PROTECT trial – a European randomised phase III-trial comparing proton and photon therapy in the treatment of patients with oesophageal cancer. AO [Internet]. 2025 Mar. 13 [cited 2026 May 14];64:406-14. Available from: https://medicaljournalssweden.se/actaoncologica/article/view/42774