title: Letter: What upper limit of creatine kinase activity defines disease?
mesh_terms: D000792:Angiography; D006348:Cardiac Surgical Procedures; D019411:Clinical Laboratory Techniques; D003402:Creatine Kinase / Q000097:blood*; D006801:Humans; D007527:Isoenzymes / Q000097:blood; D009203:Myocardial Infarction / Q000175:diagnosis / Q000201:enzymology; D013997:Time Factors
chemical_list: D007527:Isoenzymes; D003402:Creatine Kinase