[1
]
NIHR Respiratory Biomedical Research Unit, Royal Brompton & Harefield NHS Foundation
Trust, London, UK; Imperial College, London, UK. Electronic address: s.kon@rbht.nhs.uk.
[2
]
NIHR Respiratory Biomedical Research Unit, Royal Brompton & Harefield NHS Foundation
Trust, London, UK; Imperial College, London, UK.
[3
]
NIHR Respiratory Biomedical Research Unit, Royal Brompton & Harefield NHS Foundation
Trust, London, UK; Harefield Pulmonary Rehabilitation Unit, Royal Brompton & Harefield
NHS Foundation Trust, London, UK; Imperial College, London, UK.
[4
]
Harefield Pulmonary Rehabilitation Unit, Royal Brompton & Harefield NHS Foundation
Trust, London, UK.
[5
]
The Hillingdon Hospital NHS Foundation Trust, Uxbridge, UK.