1. Department of Primary Care Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
2. KEM Hospital Research Centre, Pune, India
3. Christian Medical College, Vellore, India
4. Department of Public Health and Primary Care, Leiden University Medical Centre, Leiden, the Netherlands
5. NIHR Global Health Research Unit on Respiratory Health (RESPIRE), Usher Institute, The University of Edinburgh, Edinburgh, UK
6. Department of Social and Preventive Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
7. School of Medicine, Faculty of Health and Medical Sciences, Taylor’s University, Subang Jaya, Malaysia
8. Pusrawi Hospital Sdn Bhd, Kuala Lumpur, Malaysia
9. Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia