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SPAG in patients with cirrhosis and hepatic hydrothorax or cirrhosis and other causes of pleural effusion. Each patient’s SPAG value is represented by a single dot (that is, for patients with hepatic hydrothorax, n = 48). Levels are segregated according to the cause of pleural effusion, shown in the x axis. Units are g/dL and a horizontal line is placed at a value of 1.1 g/dL for reference.
