Jo Picot, Vicky Copley, Jill L. Colquitt, Neelam Kalita, Debbie Hartwell & Jackie Bryant,
2015, Health Technology Assessment, 19(69)
DOI:
Type: article
David A. Scott, Bethan Woods, Juliette C. Thompson, James F. Clark, Neil Hawkins, Mike Chambers, Bartolome R. Celli & Peter Calverley,
2015, BMC Pulmonary Medicine, 15, 1-13
DOI:
Type: article
Jill L. Colquitt, Karen Pickett, Emma Loveman & Geoff Frampton,
2014, Cochrane Database of Systematic Reviews, 8(7)