Sonia Qureshi, Mohammad Tahir Yousafzai, Shafquat Rozi, Shahida Qureshi, Aneeta Hotwani, Kamran Sadiq, Om Parkash, et al. “Detection of Typhoid Carriers by Duodenal Fluid Culture in a Tertiary Care Hospital, Karachi: A Cross-Sectional Study”. Journal of the Pakistan Medical Association 71, no. 8 (December 29, 2021): 2069–2072. Accessed July 27, 2026. https://www.jpma.org.pk/index.php/public_html/article/view/217.