Khushdil, A., S. Ali, S. Sohail, A. Ehsan, A. Awais, and G. A. Jan. “Histopathological Findings of Biopsy Specimen in Children Presenting With Lower Gastrointestinal Bleeding”. Journal of Postgraduate Medical Institute, vol. 28, no. 3, July 2014, https://www.jpmi.org.pk/index.php/jpmi/article/view/1588.