@misc{8044,
  author = {B. Dickerman and X. Garcia-Albeniz and R. Logan and S. Denaxas and M. Hernan},
  title = {Avoidable flaws in observational analyses: an application to statins and cancer},
  year = {2019},
  journal = {Nat Med},
  issn = {1078-8956},
  doi = {10.1038/s41591-019-0597-x},
}