<style face="normal" font="default" size="100%">Prevalent new-user cohort designs for comparative drug effect studies by time-conditional propensity scores</style>

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31<style face="normal" font="default" size="100%">Prevalent new-user cohort designs for comparative drug effect studies by time-conditional propensity scores</style><style face="normal" font="default" size="100%">Prevalent new-user cohort designs for comparative drug effect studies by time-conditional propensity scores</style>