RT Journal Article SR Electronic T1 Assembly 6: occupation and epidemiology JF Breathe JO Breathe FD European Respiratory Society SP 281 OP 282 DO 10.1183/20734735.007316 VO 12 IS 3 A1 Christer Janson YR 2016 UL http://breathe.ersjournals.com/content/12/3/281.abstract AB