RT Journal Article SR Electronic T1 Life threatening total occlusion of the left coronary artery after acetylcholine infusion JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 1137 OP 1137 DO 10.1136/heart.89.10.1137 VO 89 IS 10 A1 J S Wijpkema A1 G A J Jessurun A1 R A Tio YR 2003 UL http://heart.bmj.com/content/89/10/1137.abstract AB