GPT and fatty liver disease: Hepatic steatosis was evaluated using ultrasonography for diagnosing NAFLD in most studies (n = 10) [32, 33, 36–40, 45, 46, 48], while the others studies used codes (n = 3) [42, 44, 47], fatty liver index (FLI) (n = 2) [41, 43], elevated ALT levels (n = 1) [35], and non-contrast CT imaging (n = 1) [34].