[1] Manchester Univ NHS Fdn Trust, Wythenshawe Hosp, Lung Canc & Thorac Surg Directorate, Southmoor Rd, Manchester M23 9LT, England
[2] Natl Inst Hlth & Care Excellence, NICE Ctr Guidelines, London, England
[3] UCL, Lungs Living Res Ctr, UCL Respirator, London, England
[4] Midcheshire Hosp NHS Fdn Trust, Leighton Hosp Middlewich Rd, Crewe CW1 4QJ, England
[5] Univ Coll London Hosp, Dept Thorac Med, London, England
[6] Macclesfield Hosp, East Cheshire NHS Trust, Victoria Rd, Macclesfield SK10 3BL, Ches, England
[7] Manchester Univ NHS Fdn Trust, Manchester Royal Infirm, Oxford Rd, Manchester M13 9WL, England
[8] Royal Albert Edward Infirm, Wigan & Leigh NHS Fdn Trust, Wigan Lane, Wigan WN1 2NN, England
[9] North Manchester Gen Hosp, Pennine Acute Hosp NHS Trust, Manchester M8 5RB, England
[10] Univ Hosp Derby, Burton NHS Fdn Trust, Uttoxeter Rd, Derby DE22 3NE, England
[11] Nottingham City Hosp, Nottingham Univ Hosp NHS Trust, Hucknall Rd, Nottingham NG5 1PB, England
[12] Univ Hosp Leicester NHS Trust, Glenfield Hosp, Groby Rd, Leicester LE3 9QP, England
[13] Salford Royal Hosp, Stott Lane, Salford M6 8HD, England