Protected by the sternum and the ribcage, your heart sits comfortably in the center of your chest. It weighs less than 1 pound and beats about 100,000 times per day. That is 36,500,000 times each year ...
THE presence of complete heart block in the pediatric age group has been known for many years. 1 A sizable number of publications, consisting mostly of reports of a small number of cases, indicates ...
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