title: [Abecedary of the "Annales". Part 12].
abstract: The terms included and detailed in the present part are: gold standard, grey literature, heterogeneity, homogeneity, and null hypothesis.
authors.affiliation: Service de Chirurgie Générale et Digestive, Hôtel-Dieu, boulevard Léon-Malfreyt, 63058 Clermont-Ferrand, France. kslim@chu-clermontferrand.fr
authors.forename: K
authors.initials: K
authors.lastname: Slim
mesh_terms: D019317:Evidence-Based Medicine; D013502:General Surgery; D010506:Periodicals as Topic; D009626:Terminology as Topic