title: [Collagen diseases. Systemic lupus erythematosus: lights and shadows].
mesh_terms: D006801:Humans; D008180:Lupus Erythematosus, Systemic / Q000209:etiology / Q000276:immunology
vernacular_title: A propósito de "moléstias do colágeno". O lupus eritematoso difuso: luzes e sombra.