@misc{9881,
  author = {R. Tannen and M. Weiner and D. Xie},
  title = {Replicated studies of two randomized trials of angiotensin-converting enzyme inhibitors: further empiric validation of the \textquoterightprior event rate ratio\textquoteright to adjust for unmeasured confounding by indication},
  year = {2008},
  journal = {Pharmacoepidemiol Drug Saf},
  volume = {17},
  number = {7},
  pages = {671-85},
  issn = {1053-8569},
  doi = {10.1002/pds.1584},
}