Muecke, R. et al. 2007. Demographic, clinical and treatment related predictors for event-free probability following low-dose radiotherapy for painful heel spurs – a retrospective multicenter study of 502 patients. Acta Oncologica. 46, 2 (Jan. 2007), 239–246. DOI:https://doi.org/10.1080/02841860600731935.