Preethi G, Abilasha R, and Dinesh Premavathy. “Precautions and Importance of PPE - Assessment of Knowledge Among Dental Health Care Workers - A Questionnaire Based Study”. International Journal of Research in Pharmaceutical Sciences, vol. 11, no. (SPL 3), Oct. 2020, pp. 1791-8, https://ijrps.com/home/article/view/3417.