title: Further observations on the relationship between QTc of an electrocardiogram and plasma calcium levels in cows.
mesh_terms: D000704:Analysis of Variance; D000818:Animals; D002118:Calcium / Q000097:blood*; D002417:Cattle; D002418:Cattle Diseases / Q000097:blood* / Q000503:physiopathology; D004562:Electrocardiography / Q000662:veterinary*; D005260:Female; D006996:Hypocalcemia / Q000097:blood / Q000503:physiopathology / Q000662:veterinary*; D010319:Parturient Paresis / Q000097:blood* / Q000503:physiopathology; D011247:Pregnancy; D012044:Regression Analysis
chemical_list: D002118:Calcium