TY  - RPRT
TI  - Pitfalls in performing meta-analysis: I.
AU  - M S Higgins
AU  - J L Stiff
PY  - 1993
DO  - 10.1097/00000542-199308000-00038
UR  - https://pubmed.ncbi.nlm.nih.gov/8342859/
ID  - 8342859
ER  -