University of Aleppo - Faculty of Medicine, University of Aleppo - Faculty of Medicine, University of Aleppo - Faculty of Medicine, Damascus University - Faculty of Medicine, University of Aleppo - Faculty of Medicine, University of Aleppo - Faculty of Medicine, NMC Royal Hospital, Hamad Medical Corporation - Department of Internal Medicine, Ministry of Health (Oman), Zagazig University - Department of Internal Medicine, The Egyptian Ministry of Health, Fenerbahçe Üniversite, The University of Jordan, Jordan University of Science and Technology - Faculty of Medicine, Cornell University - Weill Cornell Medicine - Qatar and Ulm University - Department of Psychiatry and Psychotherapy