00316nas a2200121   4500000000100000008004100001100001300042700001300055700001500068700001400083245008300097022001400180       2019                            d1 aM. Eberg1 aR. Platt1 aP. Reynier1 aK. Filion00aEstimation of high-dimensional propensity scores with multiple exposure levels  a1053-8569