?url_ver=Z39.88-2004&rft_id=doi%3A10.1038%2F20178&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Grafman&rft.au=Grafman%2C+Jordan&rft.aufirst=Jordan&rft.issn=0028-0836&rft.pages=148-151&rft.atitle=The+role+of+the+anterior+prefrontal+cortex+in+human+cognition&rft.date=1999&rft.issue=6732&rft.volume=399&rft.title=Nature&rft.genre=article