Asma Sikandar, Syeda Maryam Wasif, Mohsin Zaheer, Sarwat Nazir, Aasia Noor, Nadir Zafar Khan, and Ahsan Numan. “Prevalence of Constipation in Healthy Population, an Observational Cross Sectional Study”. Esculapio Journal of SIMS, vol. 15, no. 1, Feb. 2019, pp. 91-93, https://esculapio.pk/journal/index.php/journal-files/article/view/1370.