“Prevalance of Helicobacterpylori Infection Based on Gastric Biobsy and Stool Antigen Test in Adult Patients With Dyspepsia”. Latakia University Journal -Medical Sciences Series, vol. 41, no. 6, Dec. 2019, https://journal.latakia-univ.edu.sy/index.php/hlthscnc/article/view/9343.