Krishan, Kewal, and Tanuj Kanchan. “Lockdown Is an Effective ‘vaccine’ Against COVID-19: A Message from India”. The Journal of Infection in Developing Countries 14, no. 06 (June 30, 2020): 545-546. Accessed August 5, 2020. https://jidc.org/index.php/journal/article/view/32683342.