RT Journal Article SR Electronic T1 Interaction of smoking with respiratory effects of occupational dust exposure: a prospective population study among Norwegian men JF ERJ Open Research JO erjor FD European Respiratory Society SP 00021-2018 DO 10.1183/23120541.00021-2018 VO 4 IS 2 A1 Tynes, Tore A1 Løvseth, Eva Kristin A1 Johannessen, Håkon A. A1 Sterud, Tom A1 Skogstad, Marit YR 2018 UL http://openres.ersjournals.com/content/4/2/00021-2018.abstract AB