Recommendations for radiotherapy quality assurance in clinical trials. - Nielsen CP; Samsøe E; Offersen BV; Lorenzen EL; Persson G; Mortensen HR; Nissen HD; Vogelius IR; Kallehauge JF; Muren LP; Brincker M; Felter MVO; et al. (Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology, 2025)