RT Journal Article SR Electronic T1 Letters to the editor JF British Heart Journal JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 193 OP 193 DO 10.1136/hrt.69.2.193 VO 69 IS 2 A1 Marvin F Sturridge A1 Julie Glickstein A1 Deborah Friedman A1 Alan Langsner A1 Monika Rutkowski YR 1993 UL http://heart.bmj.com/content/69/2/193.1.abstract AB