Large spontaneous HBV DNA fluctuations and potential usefulness of a single-point measurement of combined HBV DNA and quantitative HBsAg for the exclusion of HBeAg-negative chronic hepatitis B: A prospective Tunisian cohort study. - Chtourou A; Gargouri S; Elleuch E; Feki L; Smaoui F; Taktak A; Mnif K; Kassis M; Hammami A; Ben Jemaa M; Karray H (Arab journal of gastroenterology : the official publication of the Pan-Arab Association of Gastroenterology, 2023)