RT Journal Article SR Electronic T1 ADVANCED MITRAL STENOSIS AT THREE YEARS OLD JF British Heart Journal JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 52 OP 56 DO 10.1136/hrt.7.1.52 VO 7 IS 1 A1 R. Sleigh Johnson A1 David Lewes YR 1945 UL http://heart.bmj.com/content/7/1/52.abstract AB