1 UCL Respiratory, University College London, London, UK. Electronic address: j.hurst@ucl.ac.uk.
2 Icahn School of Medicine, Mount Sinai Hospital, New York, NY, USA.
3 Research, The George Institute of Global Health, New Delhi, India; Faculty of Medicine, University of New South Wales, Sydney, New South Wales, NSW, Australia; Nuffield Department for Women and Reproductive Health, The George Institute of Global Health, University of Oxford, Oxford, UK.
4 CRONICAS Centre of Excellence in Chronic Diseases, Universidad Peruana Cayetano Heredia, Lima, Peru.
5 Department of Pharmacy Practice, College of Pharmacy, Purdue University, Indianopolis, Indiana, IN, USA.
6 Department of Pneumology, Instituto de Investigación Hospital Universitario de la Princesa, Universidad Autónoma de Madrid, Madrid, Spain.
7 Division of Pulmonary and Critical Care, Johns Hopkins University, Baltimore, MD, USA.
8 Department of Population Health, New York University School of Medicine, New York, NY, USA.