?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Sheringham%2C+J&rft.aufirst=J&rft.aulast=Sheringham&rft.pages=2378&rft.atitle=Not+visiting+the+GP+and+the+risk+of+cancer%3A+what+are+the+possible+implications+for+research%2C+policy+and+practice%3F&rft.title=International+Journal+of+Cancer&rft.issue=12&rft.volume=141&rft.date=15+December+2017&rft.issn=0020-7136&rft.genre=article