?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Pietrini%2C+Pietro&rft.aulast=Pietrini&rft.aufirst=Pietro&rft.atitle=PET+and+the+effects+of+aging+and+neurodegeneration+on+brain+function%3A+basic+principles&rft.title=Drug+News+%26+Perspectives&rft.date=1998&rft.volume=11&rft.issue=3&rft.pages=161-165&rft.issn=0214-0934&rft.genre=article