<style face="normal" font="default" size="100%">Managing cancer pain at the end of life with multiple strong opioids: a population-based retrospective cohort study in primary care</style>

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31<style face="normal" font="default" size="100%">Managing cancer pain at the end of life with multiple strong opioids: a population-based retrospective cohort study in primary care</style><style face="normal" font="default" size="100%">Managing cancer pain at the end of life with multiple strong opioids: a population-based retrospective cohort study in primary care</style>