Worm, E. S., Hansen, A. T., Petersen, J. B., Muren, L. P., Præstegaard, L. H., & Høyer, M. (2010). Inter- and intrafractional localisation errors in cone-beam CT guided stereotactic radiation therapy of tumours in the liver and lung. Acta Oncologica, 49(7), 1177–1183. https://doi.org/10.3109/0284186X.2010.498435