@misc{9622,
  author = {D. Price and J. Haughney and E. Sims and M. Ali and J. von Ziegenweidt and E. Hillyer and A. Lee and A. Chisholm and N. Barnes},
  title = {Effectiveness of inhaler types for real-world asthma management: retrospective observational study using the GPRD},
  year = {2011},
  journal = {J Asthma Allergy},
  volume = {4},
  pages = {37-47},
  issn = {1178-6965},
  doi = {10.2147/jaa.s17709},
}