Amoun, Ammar, Asmahan Zinab, and Laura Ali Kafa. 2019. “Investigating The Microbial Contamination Of Cellular Phones Among Dental Students In Faculty Of Dentistry _ Tishreen University”. Tishreen University Journal -Medical Sciences Series 41 (6). https://journal.tishreen.edu.sy/index.php/hlthscnc/article/view/9357.