Ahmed, Sibtain. “Search for Rapid and Less Expensive COVID-19 Tests for Lower Middle-Income Countries-Antigen Based Immunoassays Remains a Neglected Tool”. Journal of Ayub Medical College Abbottabad 32, no. 4-Sup 1 (January 16, 2021): 709. Accessed March 14, 2025. https://jamc.ayubmed.edu.pk/index.php/jamc/article/view/8239.