1 Division of Pulmonary & Critical Care Medicine, Atrium Health, Charlotte, North Carolina, USA.
2 Division of Pulmonary & Critical Care Medicine, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA.
3 World Health Organization, Geneva, Switzerland.
4 Department of Medicine, Alpert School of Medicine, Brown University, Providence, Rhode Island, USA.
5 Divisão de Pneumologia, Instituto do Coração, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo (SP), Brasil.
6 Department of Critical Care Medicine, Sunnybrook Health Sciences Centre and Interdepartmental Division of Critical Care Medicine and Institute of Health Policy, Management, and Evaluation, University of Toronto, Toronto, Ontario, Canada.
7 Addis Ababa University College of Health Sciences, Addis Ababa, Ethiopia.
8 The Malawi Liverpool Wellcome Trust Clinical Research Programme, Queen Elizabeth Central Hospital, Blantyre, Malawi.
9 Liverpool School of Tropical Medicine, Liverpool, UK.
10 University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA.
11 Department of Paediatrics, University of British Columbia, Vancouver, British Columbia, Canada.
12 Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA.
13 Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Washington, Seattle, Washington, USA.