@article{dra93eff,
  title = {Effects of Misspecification of the Propensity Score on Estimators of Treatment Effect},
  volume = {49},
  journal = {Biometrics},
  author = {Drake, Christiana},
  year = {1993},
  keywords = {confounding,bias,observation-study,propensity-score},
  pages = {1231-1236},
  citeulike-article-id = {13264017},
  posted-at = {2014-07-14 14:09:27},
  priority = {0}
}