1 National Heart & Lung Institute, Imperial College London, London, UK.
2 Department of Respiratory Medicine, Royal Brompton and Harefield Hospitals, London, UK.
3 Centre for Human & Applied Physiological Sciences, School of Basic & Medical Biosciences, Faculty of Life Sciences & Medicine, King's College London, London, UK.
4 Hull University Teaching Hospitals NHS Trust, Hull, UK.
5 Respiratory Research Group, Hull York Medical School, Hull, UK.
6 Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, UK.
7 Department of Anatomy and Physiology, University of Melbourne, Melbourne, VIC, Australia.
8 Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.
9 Division of Critical Care Medicine, Albert Einstein College of Medicine, Montefiore Medical Center, New York, USA. pdicpin@gmail.com.