Ahmad, Tahir, Yasir Waheed, Sadia Tahir, Sher Zaman Safi, Kaneez Fatima, Muhammad Sohail Afzal, Zia-ur-Rehman Farooqi, and Ishtiaq Qadri. “Frequency of HEV Contamination in Sewerage Waters in Pakistan”. The Journal of Infection in Developing Countries 4, no. 12 (October 7, 2010): 842–845. Accessed May 4, 2024. https://jidc.org/index.php/journal/article/view/21252466.