The role of miR-320d in regulation of cigarette smoke-induced pro-inflammatory responses in COPD Mirjam P. Roffel; Corry-Anke Brandsma; Alen Faiz; Marnix R. Jonker; Wim Timens; Guy F. Joos; Guy G. Brusselle; Tania Maes; Ken R. Bracke; Maarten van den Berge; Irene H. Heijink;