M. A. Saifullah, A. A. Khan, S. Zahoor, S. Saif, J. S. Hashmi, and W. Amer, “Prevalence of celiac disease in irritable bowel syndrome patients: A single centre experience from a large teaching hospital of Lahore, Pakistan”, J Fatima Jinnah Med Univ, vol. 14, no. 4, pp. 176–179, Feb. 2021.