PT - JOURNAL ARTICLE AU - C S Smithen AU - E Sowton TI - His bundle electrograms. AID - 10.1136/hrt.33.5.633 DP - 1971 Sep 01 TA - British Heart Journal PG - 633--638 VI - 33 IP - 5 4099 - http://heart.bmj.com/content/33/5/633.short 4100 - http://heart.bmj.com/content/33/5/633.full SO - Heart1971 Sep 01; 33