Maleki, Iradj, Masoumeh Mohammadpour, Niloufar Zarrinpour, Mohadeseh Khabazi, and Reza Ali Mohammadpour. 2019. “Prevalence of Helicobacter Pylori Infection in Sari Northern Iran; A Population Based Study”. Gastroenterology and Hepatology from Bed to Bench 12 (1):31-37. https://journals.sbmu.ac.ir/ghfbb/index.php/ghfbb/article/view/1425.