TY  - RPRT
TI  - Meta-analysis. Unresolved issues and future developments.
AU  - G Davey Smith
AU  - M Egger
PY  - 1998
DO  - 10.1136/bmj.316.7126.221
UR  - https://pubmed.ncbi.nlm.nih.gov/9468698/
ID  - 9468698
ER  -