Hemodynamics of the superior mesenteric artery and splenic artery in healthy subjects and patients with portal hypertension: Investigatin with duplex Doppler ultrassonography - SARAÇYAKUPOĞLU, Derya; ERDEN, Ayşe; ÖLÇER, Tülay; CUMHUR, Turhan (Turkish Journal of Gastroenterology, 1998)