1. Faculty of Medicine, Aleppo University, Aleppo, Syria
2. Faculty of Medicine, Aleppo University, Aleppo, Syria.
3. Faculty of Medicine of Algiers, University of Algiers 1, Algeria
4. Jordan University of Science and Technology
5. Faculty of Medicine, Damascus University, Damascus, Syria
6. Faculty of Medicine, Tishreen University, Lattakia, Syria
7. NMC Royal Hospital, 16th Street, Khalifa City, Abu Dhabi, UAE
8. Respiralab Research Group, Guayaquil, Ecuador