Cullinan Paul, D'Souza Eva, Tennant Rachel, Barber Chris
Department of Occupational and Environmental Medicine, Imperial College (NHLI) and Royal Brompton Hospital, London, UK.
Health Management Limited, London, UK.
Thorax. 2014 Nov;69(11):1059-60. doi: 10.1136/thoraxjnl-2014-205251. Epub 2014 Jul 8.