?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=Nurul+Huriah&rft.au=Astuti%2C+Nurul+Huriah&rft.aulast=Astuti&rft.title=Is+the+Frequency+of+Smoking+Affecting+the+Risk+of+Abusing+Cannabis%3F&rft.issn=2355-3596&rft.atitle=Is+the+Frequency+of+Smoking+Affecting+the+Risk+of+Abusing+Cannabis%3F&rft.genre=article