Posterior Cord Syndrome and Trace Elements Deficiency as an Uncommon Presentation of Common Variable Immunodeficiency oleh Yuri Silva Macedo, Ananda dos Santos Mota, Priscila Morais Monteiro, Angela Cristina Gouvêa Carvalho, Barbara Fernandes Diniz, Pedro Gemal Lanzieri, Ricardo Carneiro Ramos, Luis Otavio Mocarzel, Ronaldo Altenburg Gismondi