1. Esophageal cancer;Munoz,1996
2. Ferlay J, Shin HR, Bray F, Forman D, Mathers C, Parkin DM. GLOBOCAN 2008 v1.2, Cancer Incidence and Mortality Worldwide: IARC CancerBase No. 10 [Internet]. Lyon, France: International Agency for Research on Cancer; 2010. Available from: http://globocan.iarc.fr.
3. Comprehensive prevention and treatment for esophageal cancer;Lu;Chin Med J (Engl),1999
4. Cancer incidence in Golestan Province: report of an ongoing population-based cancer registry in Iran between 2004 and 2008;Roshandel;Arch Iran Med,2012
5. Epidemiologic features of upper gastrointestinal tract cancer in northeastern Iran;Islami;Br J Cancer,2004