RT Journal Article SR Electronic T1 Significance and assessment of coronary microvascular dysfunction JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 587 OP 595 DO 10.1136/hrt.2009.183327 VO 97 IS 7 A1 Leung, Dominic Y A1 Leung, Melissa YR 2011 UL http://heart.bmj.com/content/97/7/587.abstract AB