title: A field guide to experts.
authors.affiliation: Informed Choice Research Department, Norwegian Health Services Research Centre, PO Box 0130, Oslo, Norway. oxman@online.no
authors.forename: Andrew D
authors.initials: AD
authors.lastname: Oxman
authors.forename: Iain
authors.initials: I
authors.lastname: Chalmers
authors.forename: Alessandro
authors.initials: A
authors.lastname: Liberati
mesh_terms: D001291:Attitude of Health Personnel; D005104:Expert Testimony; D006801:Humans