RT Journal Article SR Electronic T1 Reproducibility of the flow-volume loop. JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 480 OP 480 DO 10.1136/thx.35.6.480 VO 35 IS 6 A1 Shaw, A A1 Fisher, J YR 1980 UL http://thorax.bmj.com/content/35/6/480.abstract AB