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 Geertje M. de Boer A1 T.H. Mennema A1 Esther van Noort A1 Niels H. Chavannes A1 Erwin Birnie A1 Johannes C.C.M. in 't Veen YR 2018 UL http://openres.ersjournals.com/content/4/2/00011-2018.abstract AB