A critical look at the ret.
D000818:Animals; D002294:Carcinoma, Squamous Cell / Q000532:radiotherapy; D006801:Humans; D008433:Mathematics; D051379:Mice; D009369:Neoplasms / Q000532:radiotherapy*; D011830:Radiation Effects; D011879:Radiotherapy Dosage / Q000592:standards*; D012867:Skin / Q000528:radiation effects*; D013552:Swine; D013997:Time Factors