title: Developing valid benchmarks for laboratories and regulatory agencies.
authors.affiliation: Web Editorial Board, American Society of Echocardiography.
authors.forename: A M
authors.initials: AM
authors.lastname: Keller
mesh_terms: D019992:Databases as Topic; D004452:Echocardiography / Q000592:standards*; D007753:Laboratories / Q000458:organization & administration / Q000592:standards*