1. Leeds Teaching Hospitals NHS Trust; Department of General Surgery; Beckett Street Leeds UK LS9 7TF
2. Damascus University; Iskendarieh Street Al Wozara Building NO 28 , 9th floor Damascus Syrian Arab Republic
3. Modern Psychiatry Hospital; Psychiatry Centre; 27 Al Zahrawi Street Rawda Damascus Syrian Arab Republic
4. Northern General Hospital; Department of Trauma and Orthopaedics; Herries Road Sheffield UK S5 7AU
5. Al-Mowasat Hospital; Infectious Diseases Department; 27 Al Zahrawi Street Damascus University Damascus Syrian Arab Republic