MATHEMA, Smriti. The Impact of COVID-19 on Immunization Services. Journal of Lumbini Medical College, [S. l.], v. 8, n. 1, p. 158–160, 2020. Disponível em: https://www.nepjol.info/index.php/JLMC/article/view/40790. Acesso em: 7 dec. 2025.