title: Meta-analysis: Can we mix apples and oranges?
authors.affiliation: Department of Medicine, Gastroenterology Division, McMaster University, Hamilton, Ontario, Canada.
authors.forename: Paul
authors.initials: P
authors.lastname: Moayyedi
mesh_terms: D005762:Gastroenterology; D006801:Humans; D015201:Meta-Analysis as Topic; D012107:Research Design; D013223:Statistics as Topic