COVID-19 Independent Risk Factors for Unfavorable Disease Progression: A Cross-Sectional Study from Romania oleh Laza R, Lazureanu VE, Musta VF, Nicolescu ND, Vernic C, Tudor A, Critu R, Vilceanu L, Paczeyka R, Profir VB, Marinescu AR, Mocanu A, Cut TG, Lighezan DF, Baditoiu LM