?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Zhao&rft.aufirst=H&rft.au=Zhao%2C+H&rft.date=19+March+2020&rft.issue=3&rft.atitle=Validation+of+an+algorithm+to+evaluate+the+appropriateness+of+outpatient+antibiotic+prescribing+using+big+data+of+Chinese+diagnosis+text&rft.title=BMJ+Open&rft.volume=10&rft.genre=article