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. 2015 Nov 6;5(11):e009446. doi: 10.1136/bmjopen-2015-009446

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Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/

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Prevalence of multiple substance use and misuse (simultaneous harmful drinking and cigarette smoking) with OR between and within genders. Percentage of reported frequency for boys and girls with n=472 and n=485, respectively, being 100%.