Grønlie Cameron, M., Kersten, C., Vistad, I., Fosså, S., & Grønlie Guren, M. (2014). Palliative pelvic radiotherapy of symptomatic incurable rectal cancer – a systematic review. Acta Oncologica, 53(2), 164–173. https://doi.org/10.3109/0284186X.2013.837582