@misc{8381,
  author = {C. Rebordosa and E. Plana and J. Aguado and S. Thomas and E. Garcia-Gil and S. Perez-Gutthann and J. Castellsague},
  title = {GOLD assessment of COPD severity in the Clinical Practice Research Datalink (CPRD)},
  year = {2018},
  journal = {Pharmacoepidemiol Drug Saf},
  issn = {1053-8569},
  doi = {10.1002/pds.4448},
}