@misc{7912,
  author = {S. Price and X. Zhang and A. Spencer},
  title = {Measuring the impact of national guidelines: What methods can be used to uncover time-varying effects for healthcare evaluations?},
  year = {2020},
  journal = {Soc Sci Med},
  volume = {258},
  pages = {113021},
  issn = {0277-9536},
  doi = {10.1016/j.socscimed.2020.113021},
}