RT Journal Article
SR Electronic
T1 The authors reply
JF British Heart Journal
JO Heart
FD BMJ Publishing Group Ltd and British Cardiovascular Society
SP 491
OP 492
DO 10.1136/hrt.62.6.491
VO 62
IS 6
A1 Burrell, C J
A1 Blake, D R
YR 1989
UL http://heart.bmj.com/content/62/6/491.abstract
AB