RT Journal Article SR Electronic T1 Diagnostic accuracy of technician supervised and reported exercise tolerance tests JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 381 OP 382 DO 10.1136/heart.87.4.381 VO 87 IS 4 A1 D F Muir A1 M Jummun A1 D J Stewart A1 A L Clark YR 2002 UL http://heart.bmj.com/content/87/4/381.abstract AB