PT - JOURNAL ARTICLE AU - Aubrey Leatham AU - Louis Vogelpoel TI - THE EARLY SYSTOLIC SOUND IN DILATATION OF THE PULMONARY ARTERY AID - 10.1136/hrt.16.1.21 DP - 1954 Jan 01 TA - British Heart Journal PG - 21--33 VI - 16 IP - 1 4099 - http://heart.bmj.com/content/16/1/21.short 4100 - http://heart.bmj.com/content/16/1/21.full SO - Heart1954 Jan 01; 16