title: The serum CPK levels in postoperative patients over forty.
mesh_terms: D000328:Adult; D000368:Aged; D003402:Creatine Kinase / Q000097:blood*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013514:Surgical Procedures, Operative
chemical_list: D003402:Creatine Kinase