Gallbladder wall thickening as a sign of esophageal varices in chronic liver disease* - ERSÖZ, Galip; ÖZÜTEMİZ, Ömer; AKARCA, Ulus Salih; YILMAZ, Mustafa; KARASU, Zeki; BATUR, Yücel (Turkish Journal of Gastroenterology, 1999)