TY - STAND AU - T. Chen AU - R. Knaggs AU - L. Chen BT - Br J Clin Pharmacol DO - 10.1111/bcp.15028 PY - 2021 T2 - Br J Clin Pharmacol TI - Association between opioid-related deaths and persistent opioid prescribing in primary care in England: a nested case-control study SN - 0306-5251 ER -