Before revision:  We also present a procedure for combining two datasets, with confounders observed in one and mediators in the other . Finally, we evaluate our methods on both simulated data and the IHDP and JTPA datasets.
After revision:  We also present a procedure for combining two datasets, one with observed confounders and another with observed mediators . Finally, we evaluate our methods on both simulated data and the IHDP and JTPA datasets.