Drupal-Bibcite31<style face="normal" font="default" size="100%">Metformin use and risk of cancer in patients with type 2 diabetes: a cohort study of primary care records using inverse probability weighting of marginal structural models</style><style face="normal" font="default" size="100%">Metformin use and risk of cancer in patients with type 2 diabetes: a cohort study of primary care records using inverse probability weighting of marginal structural models</style>