GPT and hepatitis A virus infection: This study excluded individuals with ALT or AST > 10\documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{mathrsfs}\usepackage{upgreek}\setlength{\oddsidemargin}{-69pt}\begin{document}$$\:\times\:$$\end{document}ULN [18, 19], which were considered to have a predisposition to severe hepatitis or the possibility of acute hepatitis, and require liver protection therapy.