title: Commentary: Heterogeneity in meta-analysis should be expected and appropriately quantified.
authors.affiliation: MRC Biostatistics Unit, Institute of Public Health, Robinson Way, Cambridge CB2 0SR, UK. julian.higgins@mrc-bsu.cam.ac.uk
authors.forename: Julian P T
authors.initials: JP
authors.lastname: Higgins
mesh_terms: D003627:Data Interpretation, Statistical; D006801:Humans; D015201:Meta-Analysis as Topic; D015233:Models, Statistical