RT Journal Article SR Electronic T1 Intrinsic factors influence self-management participation in COPD: effects on self-efficacy JF ERJ Open Research JO erjor FD European Respiratory Society SP 00011-2018 DO 10.1183/23120541.00011-2018 VO 4 IS 2 A1 de Boer, Geertje M. A1 Mennema, T.H. A1 van Noort, Esther A1 Chavannes, Niels H. A1 Birnie, Erwin A1 in 't Veen, Johannes C.C.M. YR 2018 UL http://openres.ersjournals.com/content/4/2/00011-2018.abstract AB