This article is only available in the PDF format. Download the PDF to view the article, as well as its associated figures and tables.
ECG Analysis No. 6 will appear in the April issue of the Archives.
ECG ANALYSIS. Arch Intern Med. 1972;129(3):501. doi:10.1001/archinte.1972.00320030121021
Best of JAMA Network 2022
Customize your JAMA Network experience by selecting one or more topics from the list below.