@article{ros89rol,
  title = {The Role of Known Effects in Observational Studies},
  volume = {45},
  journal = {Biometrics},
  author = {{Rosenbaum}},
  year = {1989},
  keywords = {measurement,research-methods,study-design-and-stopping-rules},
  pages = {557-569},
  citeulike-article-id = {13264758},
  posted-at = {2014-07-14 14:09:41},
  priority = {0}
}

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