Hassan RM, Kamal ZB, Al Marzook TJ, Hussein WA. Open Access Esophagogastroduodenoscopy. J Fac Med Baghdad [Internet]. 2010 Oct. 3 [cited 2024 Nov. 22];52(3):269-73. Available from: https://iqjmc.uobaghdad.edu.iq/index.php/19JFacMedBaghdad36/article/view/972