TY  - JOUR
A1  - Egger, M.
A1  - Smith, G.D.
A1  - Schneider, M.
A1  - Minder, C.
T1  - Bias in meta-analysis detected by a simple, graphical test
Y1  - 1997
DO  - 10.1136/bmj.315.7109.629
VL  - 315
IS  - 7129

ER  -