Sharma, Tanishka, Garima Mittal, Charu Kalra, Rajiv Kumar Agarwal, and Balwant S Rawat. 2019. “Anti-HBs Antibodies over Time in Healthcare Workers”. Indian Journal of Community Health 31 (1):144-49. https://doi.org/10.47203/IJCH.2019.v31i01.024.