ACUTE PHOSE REACTANTS AND RETINOL BINDING PROTEIN LEVELS IN INFLAMMATORY BOWEL DISEASE - YILMAZ, Uğur; AYAZ, Selime; SARITAŞ, Ülkü; BAYSAL, Çağlar; YILDIRIM, Bülent; ÜLKER, Aysel; ŞAHİN, Burhan (Turkish Journal of Gastroenterology, 1993)