P3 COPD causation; an assessment of agreement between expert clinical raters
AC Darby, R Barraclough, PS Burge, NS Hopkinson, JL Hoyle, RA Lawson, RM Niven, SC Stenton, CJ Warburton, CM Barber, PD Blanc, AD Curran, D Fishwick
Thorax Dec 2010, 65 (Suppl 4) A77-A78; DOI: 10.1136/thx.2010.150961.3