@misc{9039,
  author = {A. Ali and A. Hartzema and A. Winterstein and R. Segal and X. Lu and L. Hendeles},
  title = {Application of multicategory exposure marginal structural models to investigate the association between long-acting beta-agonists and prescribing of oral corticosteroids for asthma exacerbations in the Clinical Practice Research Datalink},
  year = {2015},
  journal = {Value Health},
  volume = {18},
  number = {2},
  pages = {260-70},
  issn = {1098-3015},
  doi = {10.1016/j.jval.2014.11.007},
}