Prevalence and risk factors of liver fibrosis in patients with metabolic-associated fatty liver disease undergoing bariatric surgery - Amr Elsayed; Alshymaa Hassnine; Mariana F. Gayyed; Fatma Saied; Mohamed A. Abdelzaher; Yasser Fouad; Alaa M. Mostafa; Mohamed Khalaf (Clinical & Experimental Hepatology)