Clear and simple diagram of electrocardiogram 并列题名：Clear and simple diagram of electrocardiogram Graphic illustration of electrocar-diogram Rapid Analysis of Electrocardiograms Rapid Diagnosis of Electrocardiograms A quick read on electrocardiogram Cardiac anatomy and electrocardiogram Atlas and Analysis of Clinical Electrocardiogram Essentials of paced electrocardiogram 并列题名：Rapid Analysis of Electrocardiograms