TI - SIgnificance of first-degree atrioventricular block in acute endocarditis—diagnosis PT - JOUR DP - 2013 TA - JAMA Internal Medicine pages = {726}, VI - 173 IP - 9 AID - 10.1001/jamainternmed.2013.3334b [doi] 4100 - http://dx.doi.org/10.1001/jamainternmed.2013.3334b SO - JAMA Internal Medicine May 13, 2013 173(9):726