TY  - JOUR
TI  - Cem: Coarsened Exact Matching in Stata
AU  - Matthew Blackwell
AU  - Stefano Maria Iacus
AU  - Gary King
AU  - Giuseppe Porro
JO  - The Stata Journal Promoting communications on statistics and Stata
PY  - 2009
VL  - 9
IS  - 4
DO  - 10.1177/1536867x0900900402
UR  - https://doi.org/10.1177/1536867x0900900402
ER  -