ECG of the month: sinoatrial block.
D000818:Animals; D004283:Dog Diseases / Q000175:diagnosis*; D004285:Dogs; D004562:Electrocardiography / Q000662:veterinary*; D006327:Heart Block / Q000662:veterinary*; D008297:Male; D012804:Sick Sinus Syndrome / Q000175:diagnosis / Q000662:veterinary*; D012848:Sinoatrial Block / Q000175:diagnosis / Q000662:veterinary*