Clinical importance of serum CEA and CA-19-9 levels in oesophagogastric junction adenocarcinomas - Ozlem Sert; Hilmi Bozkurt; Tolga Olmez; Emre Aray; Orhan Uzun; Selcuk Gulmez; Aziz Senger; Mustafa Duman; Erdal Polat (Gastroenterology Review)