1. Pulmonary Medicine Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt
2. Department of Pulmonology, Gateway Centre for Respiratory and Gastrointestinal Disease, Durban, South Africa
3. Morningside Mediclinic, Sandton, Johannesburg, South Africa
4. Department of Medicine, Therapeutics and Dermatology, Kenyatta University, Nairobi, Kenya
5. Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, United Kingdom
6. Department of Clinical Medicine and Therapeutics, University of Nairobi, Nairobi, Kenya
7. Medicinal Department, AstraZeneca, Dubai, United Arab Emirates
8. Respiratory & Immunology, AstraZeneca, The Hague, The Netherlands