RT Journal Article SR Electronic T1 Role of bronchial responsiveness testing in asthma prevalence surveys JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 352 OP 354 DO 10.1136/thorax.55.5.352 VO 55 IS 5 A1 PEARCE, NEIL A1 BEASLEY, RICHARD A1 PEKKANEN, JUHA YR 2000 UL http://thorax.bmj.com/content/55/5/352.abstract AB