Sadat, SM Anwar, and - Muhammad Badruddoza. “Importance of Pre-Operative COVID 19 Screening of Asymptomatic Patients Undergoing Maxillofacial Surgery”. Journal of Bangladesh College of Physicians and Surgeons 38, no. 4 (September 22, 2020): 229–231. Accessed October 2, 2022. https://banglajol.info/index.php/JBCPS/article/view/49358.