title: Is the steepness of dose-incidence curves for tumour control or complications due to variation before, or as a result of, irradiation?
mesh_terms: D000818:Animals; D002470:Cell Survival / Q000528:radiation effects; D004307:Dose-Response Relationship, Radiation; D006801:Humans; D051379:Mice; D009369:Neoplasms / Q000532:radiotherapy