title: Letter: Digitalis toxicity.
mesh_terms: D002118:Calcium / Q000032:analysis*; D004071:Digitalis Glycosides / Q000009:adverse effects*; D004077:Digoxin / Q000097:blood; D004562:Electrocardiography; D006801:Humans; D011188:Potassium / Q000032:analysis*; D012463:Saliva / Q000032:analysis*
chemical_list: D004071:Digitalis Glycosides; D004077:Digoxin; D011188:Potassium; D002118:Calcium