title: A regional program of quality control for the clinical laboratories in Helsinki. Results of the first two years.
mesh_terms: D002624:Chemistry, Clinical; D002712:Chlorides / Q000032:analysis; D003365:Costs and Cost Analysis; D003951:Diagnostic Errors; D001330:Electronic Data Processing; D005387:Finland; D005947:Glucose / Q000032:analysis; D006801:Humans; D007753:Laboratories / Q000592:standards*; D011786:Quality Control; D012964:Sodium / Q000032:analysis
chemical_list: D002712:Chlorides; D012964:Sodium; D005947:Glucose