RT Journal Article SR Electronic T1 CARDIAC CATHETERIZATION IN CASES OF PATENT INTERAURICULAR SEPTUM, PRIMARY PULMONARY HYPERTENSION, FALLOT'S TETRALOGY, AND PULMONARY STENOSIS JF British Heart Journal JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 292 OP 303 DO 10.1136/hrt.9.4.292 VO 9 IS 4 A1 Sheila Howarth A1 J. McMichael A1 E. P. Sharpey-Schafer YR 1947 UL http://heart.bmj.com/content/9/4/292.abstract AB