The problem of alternate treatment days.
D004890:Erythema / Q000209:etiology; D006801:Humans; D008433:Mathematics; D010386:Pelvic Neoplasms / Q000532:radiotherapy; D011829:Radiation Dosage; D011855:Radiodermatitis / Q000517:prevention & control*; D011879:Radiotherapy Dosage; D012867:Skin / Q000528:radiation effects*; D013997:Time Factors