Dubey, S. R. K., N. Bhadauria, M. Shukla, P. Mittal, A. K. Arya, and R. P. Singh. “Clinico-Etiological Pattern of Upper Gastrointestinal Bleeding in Children”. International Journal of Contemporary Pediatrics, vol. 4, no. 1, Dec. 2016, pp. 132-5, doi:10.18203/2349-3291.ijcp20164592.