?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=Josephine&rft.aulast=Barnes&rft.au=Barnes%2C+Josephine&rft.pages=631-642&rft.volume=64&rft.issue=2&rft.atitle=Disease+Course+Varies+According+to+Age+and+Symptom+Length+in+Alzheimer's+Disease&rft.title=Journal+of+Alzheimer's+Disease&rft.issn=1387-2877&rft.date=19+June+2018&rft.genre=article