Vitamin D Perspective in Front Line Healthcare Workers Amid COVID-19. European Journal of Medical and Health Sciences, [S. l.], v. 3, n. 4, p. 65–72, 2021. DOI: 10.24018/ejmed.2021.3.4.957. Disponível em: https://mail.ej-med.org/index.php/ejmed/article/view/957. Acesso em: 10 oct. 2025.