Retrospective study on the toxicity induced by stereotactic body radiotherapy: overview of the reunion experience on prostate cancer in elderly patients oleh Youssef Slama, Gilles Baumont, Angelique Arcambal, Mickael Begue, Olivier Maillot, Rima Sayah, Romain Castanet, Raoul Caboche, Pedro Liberati, Hakim Slaoui, Medi Bouaziz, Olivier Borson, Nam P. Nguyen, Fabien Dutheil