?url_ver=Z39.88-2004&rft_id=10.1002%2F14651858.CD011914.pub2&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=Samantha&rft.aulast=Gardiner&rft.au=Gardiner%2C+Samantha&rft.title=Cochrane+Database+of+Systematic+Reviews&rft.issn=1469-493X&rft.volume=7&rft.atitle=Codeine+versus+placebo+for+chronic+cough+in+children&rft.issue=CD011914&rft.date=2016&rft.genre=article