TY  - GEN
AU  - Wang,Yong-ji
AU  - Cai,Hong-wei
AU  - Xia,Jie-lai
AU  - Jiang,Zhi-wei
AU  - Wang,Ling
TI  - [Propensity score (III) key issues in practice of propensity score]
SN  - 0254-6450
PY  - 2013///0620
KW  - Models, Statistical
KW  - Propensity Score
N1  - Publication Type: Journal Article; Research Support, Non-U.S. Gov't
ER  -