GPT and cholestasis: The following liver enzymes were assessed: marker for systemic inflammation C‐reactive protein (CRP); inflammatory and degenerative processes marker lactate dehydrogenase (LDH); liver injury markers alanine aminotransferase (AST) and aspartate aminotransferase (ALT); cholestasis markers gamma‐glutamyl transferase (GGT) and alkaline phosphatase (ALP); liver‐specific necrosis and hypoxic state marker glutamate dehydrogenase (GLDH).