The feasibility of early pulmonary rehabilitation and activity after COPD exacerbations: external pilot randomised controlled trial, qualitative case study and exploratory economic... oleh Matthew Cox, Catherine O’Connor, Katie Biggs, Daniel Hind, Oscar Bortolami, Matthew Franklin, Barbara Collins, Stephen Walters, Allan Wailoo, Julie Channell, Paul Albert, Ursula Freeman, Stephen Bourke, Michael Steiner, Jon Miles, Tom O’Brien, David McWilliams, Terry Schofield, John O’Reilly, Rodney Hughes