@misc{7881,
  author = {D. Lewer and P. Padmanathan and Qummer Arfeen and S. Denaxas and H. Forbes and A. Gonzalez-Izquierdo and M. Hickman},
  title = {Healthcare use by people who use illicit opioids (HUPIO): development of a cohort based on electronic primary care records in England},
  year = {2020},
  journal = {Wellcome Open Res},
  volume = {5},
  pages = {282},
  issn = {2398-502X (Print) 2398-502x},
  doi = {10.12688/wellcomeopenres.16431.1},
}