FGF21 and metabolic dysfunction-associated steatohepatitis: The hepatic expression of Klotho coreceptor was inversely associated with NASH (R2 = 0.87, p<0.0001) and directly associated with serum FGF21 (R2 = 0.57, p<0.0001) and FGF19 (R2 = 0.67, p<0.0001).