title: In reply to Vassiliou and Kountourakis.
authors.forename: Matthew D
authors.initials: MD
authors.lastname: Callister
mesh_terms: D000230:Adenocarcinoma / Q000532:radiotherapy*; D003967:Diarrhea / Q000209:etiology*; D005260:Female; D006801:Humans; D007422:Intestines / Q000528:radiation effects*; D008297:Male; D011832:Radiation Injuries / Q000150:complications*; D050397:Radiotherapy, Intensity-Modulated / Q000009:adverse effects*; D012004:Rectal Neoplasms / Q000532:radiotherapy*; D001743:Urinary Bladder / Q000528:radiation effects*