RT Journal Article SR Electronic T1 A coronary organic stenosis distal to severe, ergonovine induced spasm: decision making JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 1310 OP 1310 DO 10.1136/hrt.2004.058560 VO 91 IS 10 A1 E Romagnoli A1 G Niccoli A1 F Crea YR 2005 UL http://heart.bmj.com/content/91/10/1310.abstract AB