RT Journal Article SR Electronic T1 BOHRF guidelines for occupational asthma JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 364 OP 366 DO 10.1136/thx.2004.032367 VO 60 IS 5 A1 A J Newman Taylor A1 P Cullinan A1 P S Burge A1 P Nicholson A1 C Boyle YR 2005 UL http://thorax.bmj.com/content/60/5/364.abstract AB