RT Journal Article SR Electronic T1 Gene–environment interactions in asthma JF Occupational and Environmental Medicine JO Occup Environ Med FD BMJ Publishing Group Ltd SP 776 OP 786 DO 10.1136/oem.2004.019216 VO 63 IS 11 A1 F Castro-Giner A1 F Kauffmann A1 R de Cid A1 M Kogevinas YR 2006 UL http://oem.bmj.com/content/63/11/776.abstract AB