title: Meta-analysis requires independent observations and freedom from bias.
authors: Yale School of Public Health, Yale Center for Perinatal, Pediatric and Environmental Epidemiology, One Church Street, 6th Floor, New Haven, Connecticut, 06510, USA.
authors: Michael B
authors: MB
authors: Bracken
mesh_terms: D015982:Bias; D005610:Freedom; D006801:Humans; D015201:Meta-Analysis as Topic; D017594:Publication Bias