title: Proficiency testing program providers respond to client concerns.
authors.forename: Marie C
authors.initials: MC
authors.lastname: Earley
authors.forename: J Rex
authors.initials: JR
authors.lastname: Astles
mesh_terms: D064790:Clinical Laboratory Services / Q000592:standards*; D006801:Humans; D059021:Laboratory Proficiency Testing; D017056:Medical Laboratory Personnel / Q000592:standards*; D011786:Quality Control