Restrepo, Javier. “Micronutrients, Immunity and COVID-19: A Narrative Review”. Journal Clinical Nutrition and Metabolism 4, no. 3 (December 29, 2020): 35–50. Accessed July 3, 2024. https://revistanutricionclinicametabolismo.org/index.php/nutricionclinicametabolismo/article/view/184.