20.10.2020: “O tratamento com vitamina D está associado à redução do risco de mortalidade em pacientes com COVID-19: um estudo observacional multicêntrico transversal” * “Vitamin D Treatment Is Associated with Reduced Risk of Mortality in Patients with COVID-19: A Cross-Sectional Multi-Centre Observational Study” by Stephanie Fenxi Ling, Eleanor Broad, Rebecca Murphy, Joseph Mundattuchundayil Pappachan, Satveer Pardesi-Newton, Marie-France Kong, Edward Bernard Jude