<Journal class="Journal" value="BMJ" /> <Page class="#txt" value="1555"> <Page-2 class="#txt" value="" /> </Page> <Volume class="#txt" value="314" /> <Year class="Year" value="1997" /> </Reference> <Author class="Author" value="Gray S" /> <Medline class="Medline" value="9183222" /> <Inhibitor class="Inhibitor" value="Aricept~Donepezil~E2020" /> </Paper>