Khan, Saif, Dalia Rafat, Asad Ullah Khan, Syed Ziaur Rahman, and Nabeela Farhat. “Application of Saliva in COVID-19 Diagnosis: Challenges and Opportunities”. Bangladesh Journal of Medical Science 20, no. 4 (June 18, 2021): 697–699. Accessed August 16, 2024. https://banglajol.info/index.php/BJMS/article/view/54122.