CHAYAL, Vinod et al. Clinico-epidemiological profile of early cases of Covid-19 in state of Haryana, India. Indian Journal of Community Health, [S. l.], v. 33, n. 1, p. 97–102, 2021. DOI: 10.47203/IJCH.2021.v33i01.013. Disponível em: https://www.iapsmupuk.org/journal/index.php/IJCH/article/view/2044. Acesso em: 4 apr. 2026.