Yousefi, Mahboubeh, Mehran Sharifi-Esfahani, Nima Pourgholam-Amiji, Mohammad Afshar, Hamidreza Sadeghi-Gandomani, Omid Otroshi, and Hamid Salehiniya. “Esophageal Cancer in the World: Incidence, Mortality and Risk Factors”. Biomedical Research and Therapy 5, no. 7 (July 28, 2018): 2504-2517. Accessed November 25, 2024. http://home.biomedpress.org/index.php/BMRAT/article/view/460.