RT Journal Article SR Electronic T1 Occupational exposure and asthma control JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 1701951 DO 10.1183/13993003.01951-2017 VO 50 IS 4 A1 Dick Heederik YR 2017 UL http://erj.ersjournals.com/content/50/4/1701951.abstract AB