Sindi, O., Alshaikh, F., Godman, B. & Kurdi, A. 2022, 'The impact of the COVID-19 pandemic lockdown measures on the prescribing trends and utilisation of opioids in the English primary care setting: segmented-liner regression analysis', Expert Review of Clinical Pharmacology. https://doi.org/10.1080/17512433.2022.2093715