( TITLE-ABS-KEY ( "liver injury"  OR  " liver failure" OR "hepatic damage"  OR  "liver function abnormality"  OR  "hepatic abnormality")  AND  TITLE-ABS-KEY ( "ALT"  OR  " alanine transaminase"  OR  "SGPT" ) AND  TITLE-ABS-KEY ( "AST"  OR  "  Aspartate transaminase"  OR  "SGOT" ) AND  TITLE-ABS-KEY ( "bilirubin"  OR  " total bilirubin") AND  TITLE-ABS-KEY ( "albumin"  OR  "serum albumin") AND  TITLE-ABS-KEY ( "COVID-19"  OR  "SARS-CoV-2"  OR  "coronavirus disease" )). Here, GPT is linked to COVID-19.