In COPD, new use of long-acting bronchodilators was linked to CV events at ≤ 30 days, but not > 30 days.

@article{Stanbrook2018InCN,
  title={In COPD, new use of long-acting bronchodilators was linked to CV events at ≤ 30 days, but not > 30 days.},
  author={Matthew Stanbrook},
  journal={Annals of internal medicine},
  year={2018},
  volume={168 8},
  pages={JC47}
}