title: Correspondence (letter to the editor): low-dose radiotherapy.
authors.forename: Ulrich
authors.initials: U
authors.lastname: Schäfer
authors.forename: Oliver
authors.initials: O
authors.lastname: Micke
authors.forename: Michael
authors.initials: M
authors.lastname: Heinrich Seegenschmiedt
authors.forename: Ralph
authors.initials: R
authors.lastname: Mücke
mesh_terms: D004307:Dose-Response Relationship, Radiation; D006801:Humans; D020370:Osteoarthritis, Knee / Q000175:diagnosis* / Q000453:epidemiology / Q000532:radiotherapy*; D014481:United States