van Leeuwen, D J Assessment of portal hypertension: understanding will improve treatment. [electronic resource] - Digestive diseases (Basel, Switzerland) 1991 - 92-105 p. digital Publication Type: Journal Article; Review ISSN: 0257-2753 Standard No.: 10.1159/000171296 doi Subjects--Topical Terms: Diagnostic ImagingHumansHypertension, Portal--diagnosisLiver--diagnostic imagingLiver Diseases--complicationsPortal System--physiopathologyUltrasonography