?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Meulenbroek%2C+O&rft.aulast=Meulenbroek&rft.aufirst=O&rft.issue=7&rft.atitle=European+multicentre+double-blind+placebo-controlled+trial+of+Nilvadipine+in+mild-to-moderate+Alzheimer's+disease-the+substudy+protocols%3A+NILVAD+frailty%3B+NILVAD+blood+and+genetic+biomarkers%3B+NILVAD+cerebrospinal+fluid+biomarkers%3B+NILVAD+cerebral+blood+flow&rft.title=BMJ+Open&rft.volume=6&rft.issn=2044-6055&rft.date=1+July+2016&rft.genre=article