?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Nederkoorn%2C+PJ&rft.aufirst=PJ&rft.aulast=Nederkoorn&rft.date=22+July+2009&rft.issn=1471-2377&rft.atitle=Optimal+cut-off+criteria+for+duplex+ultrasound+for+the+diagnosis+of+restenosis+in+stented+carotid+arteries%3A+Review+and+protocol+for+a+diagnostic+study&rft.title=BMC+Neurology&rft.volume=9&rft.genre=article