External quality assurance--a personal view.
Thurlow
V
V
D001774:Blood Chemical Analysis / Q000592:standards*; D001798:Blood Proteins / Q000592:standards*; D003402:Creatine Kinase / Q000097:blood; D006801:Humans; D011786:Quality Control
D001798:Blood Proteins; D003402:Creatine Kinase