Electrocardiograms of the month.
D004070:Digitalis / Q000506:poisoning; D004562:Electrocardiography; D005260:Female; D006327:Heart Block / Q000175:diagnosis*; D006801:Humans; D008875:Middle Aged; D010946:Plants, Medicinal; D010947:Plants, Toxic; D013610:Tachycardia / Q000175:diagnosis*