title: Some changes in concepts of dose fractionation over 20 years.
authors.affiliation: Department of Radiation Oncology, UCLA Medical Center.
authors.forename: H R
authors.initials: HR
authors.lastname: Withers
mesh_terms: D000818:Animals; D006801:Humans; D011853:Radiobiology; D011878:Radiotherapy / Q000639:trends*; D011879:Radiotherapy Dosage; D013997:Time Factors