@misc{7657,
  author = {K. Wing and E. Williamson and J. Carpenter and L. Wise and S. Schneeweiss and L. Smeeth and J. Quint and I. Douglas},
  title = {Medications for chronic obstructive pulmonary disease: a historical non-interventional cohort study with validation against RCT results},
  year = {2021},
  journal = {Health Technol Assess},
  volume = {25},
  number = {51},
  pages = {1-70},
  issn = {1366-5278},
  doi = {10.3310/hta25510},
}