TY  - JOUR
A1  - Hernán, M.A.
A1  - Hernández-Diaz, S.
A1  - Werler, M.M.
A1  - Mitchell, A.A.
T1  - Causal knowledge as a prerequisite for confounding evaluation: an application to birth defects epidemiology
Y1  - 2002
DO  - 10.1093/aje/155.2.176
JF  - American Journal of Epidemiology
VL  - 155
IS  - 2
SP  - 176
EP  - -184

ER  -