title: The development of an interlaboratory proficiency testing program for the Province of Ontario. I. A preliminary survey of clinical chemistry.
mesh_terms: D000704:Analysis of Variance; D001322:Autoanalysis; D001786:Blood Glucose / Q000097:blood; D002118:Calcium / Q000097:blood; D002624:Chemistry, Clinical / Q000592:standards*; D002712:Chlorides / Q000097:blood; D003404:Creatinine / Q000097:blood; D005069:Evaluation Studies as Topic; D006801:Humans; D008722:Methods; D009864:Ontario; D010710:Phosphates / Q000097:blood; D011188:Potassium / Q000097:blood; D012964:Sodium / Q000097:blood; D013997:Time Factors; D014508:Urea / Q000097:blood; D014527:Uric Acid / Q000097:blood
chemical_list: D001786:Blood Glucose; D002712:Chlorides; D010710:Phosphates; D014527:Uric Acid; D014508:Urea; D012964:Sodium; D003404:Creatinine; D011188:Potassium; D002118:Calcium