A randomised controlled study of Bronchoscopic Lung Volume Reduction with endobronchial valves for patients with Heterogeneous emphysema and Intact interlobar Fissures: the BeLieVe... oleh Zaid Zoumot, Claire Davey, Simon Jordan, William H McNulty, Denis H Carr, Matthew D Hind, David M Hansell, Michael B Rubens, Winston Banya, Michael I Polkey, Pallav L Shah, Nicholas S Hopkinson