The evaluation of gastroesophagel reflüx incidence in children with various symtoms by cintigraphy - YARAMIŞ, Ahmet; GÜRKAN, Fuat; HASPOLAT, Kenan; DİKİCİ, Bünyamin; DERMAN, Orhan; SÖKER, Murat; YILMAZ, Süleyman (Turkish Journal of Gastroenterology, 1998)