Ranjan A, Kumar P, Verma M, Singh C, Pandey S, Naik BN, Nirala SK, Rao R. Role of BCG and Measles vaccination in protection against COVID-19 infection and severity of the disease: A pilot case-control study. Natl J Community Med [Internet]. 2022 Feb. 28 [cited 2024 Nov. 23];13(02):108-13. Available from: https://njcmindia.com/index.php/file/article/view/160