Contact x-ray brachytherapy for older or inoperable rectal cancer patients: short-term oncological and functional follow-up. Issue 2 (February 2022) - Custers, Petra; Geubels, Barbara; Huibregtse, Inge; Peters, Femke; Engelhardt, Ellen; Beets, Geerard; Marijnen, Corrie; van Leerdam, Monique; van Triest, Baukelien