@misc{9799,
  author = {S. Turner and M. Thomas and J. von Ziegenweidt and D. Price},
  title = {Prescribing trends in asthma: a longitudinal observational study},
  year = {2009},
  journal = {Arch Dis Child},
  volume = {94},
  number = {1},
  pages = {16-22},
  issn = {0003-9888},
  doi = {10.1136/adc.2008.140681},
}