Mahmud, S. ., J. . Gulshan, M. . Baidya, R. . Rashid, F. . Tasneem, A. R. . Hasan, T. . Farhana, D. . Begum, N. F. . Asha, and S. S. . Ahmed. “Spectrum of Upper GI Endoscopy in Children: A Tertiary Centre Experience from Bangladesh”. Dhaka Shishu (Children) Hospital Journal, vol. 37, no. 2, Dec. 2022, pp. 123-8, doi:10.3329/dshj.v37i2.63220.