title: The central role of external quality assurance in harmonisation and standardisation for laboratory medicine.
authors.forename: Ronda F
authors.initials: RF
authors.lastname: Greaves
mesh_terms: D000068:Accreditation; D013196:Dihydrotestosterone / Q000032:analysis / Q000592:standards; D007753:Laboratories / Q000592:standards*; D011785:Quality Assurance, Health Care / Q000592:standards*; D012015:Reference Standards
chemical_list: D013196:Dihydrotestosterone