<style face="normal" font="default" size="100%">Assumptions made when preparing drug exposure data for analysis have an impact on results: An unreported step in pharmacoepidemiology studies</style>

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31<style face="normal" font="default" size="100%">Assumptions made when preparing drug exposure data for analysis have an impact on results: An unreported step in pharmacoepidemiology studies</style><style face="normal" font="default" size="100%">Assumptions made when preparing drug exposure data for analysis have an impact on results: An unreported step in pharmacoepidemiology studies</style>