evidence: - 69. Abrishami A, Dalili N, Mohammadi Torbati P, Asgari R, Arab-Ahmadi M, Behnam B, et al. Association of Vitamin D Status with Lung Involvement and Outcome in Patients with COVID-19: A Retrospective Study. Eur. J. Nutr. 2021, 60, 2249–2257, - 70. Vassiliou AG, Jahaj E, Pratikaki M, Orfanos SE, Dimopoulou I, Kotanidou A. Low 25-Hydroxyvitamin D Levels on Admission to the Intensive Care Unit may Predispose COVID-19 Pneumonia Patients to a Higher 28-Day Mortality Risk: A Pilot Study on a Greek ICU Cohort. Nutrients. 2020, 12, pmid:33316914 - 71. Tort AR, Mercado EAM, Martínez Cuazitl A, Puente Nieto AV, Pérez RAR. Deficiency of Vitamin D is a Risk Factor of Mortality in Patients with COVID-19. Revista de Sanidad Militar. 2020, 74.