?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Cross%2C+AJ&rft.aufirst=AJ&rft.aulast=Cross&rft.atitle=Whole-colon+investigation+vs.+flexible+sigmoidoscopy+for+suspected+colorectal+cancer+based+on+presenting+symptoms+and+signs%3A+a+multicentre+cohort+study&rft.date=2019&rft.issn=1532-1827&rft.title=British+Journal+of+Cancer&rft.genre=article