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Combination therapy of varenicline with nicotine replacement therapy is better than varenicline alone: a systematic review and meta-analysis of randomized controlled trials

Crossref DOI link: https://doi.org/10.1186/s12889-015-2055-0

Published Online: 2015-07-22

Published Print: 2015-12

Update policy: https://doi.org/10.1007/springer_crossmark_policy

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