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Frequent inappropriate use of unweighted summary statistics..:

Tran, Linh ; Nhu Y, Mai ; Le Ba Nghia, Thai...
https://researchonline.lshtm.ac.uk/id/eprint/4655210/1/Tran_etal_2019_Frequent-inappropriate-use-of-unweighted-summary-statistics-in-systematic-reviews.pdf.  , 2019