1. University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD (Griac), Groningen, The Netherlands
2. UCL Respiratory, University College London, London, UK
3. Makerere University Lung Institute, College of Health Sciences, Makerere University, Kampala, Uganda
4. International Primary Care Respiratory Group, London, UK
5. Department of Primary Care Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
6. Department of Social Medicine, University of Crete, Crete, Greece
7. Pulmonology Department, National Center of Cardiology and Internal Medicine Named after M.m. Mirrakhimov, Bishkek, Kyrgyzstan