RT Journal Article SR Electronic T1 Cardiac interventional procedures in the United Kingdom in 1989. JF British Heart Journal JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 469 OP 471 DO 10.1136/hrt.66.6.469 VO 66 IS 6 A1 P J Hubner YR 1991 UL http://heart.bmj.com/content/66/6/469.abstract AB