Connective tissue diseases: Concept, classification, clinical forms. Systemic lupus erythematosus (I): Concept, etiopathogenesis, classification, epidemiology, clinical manifestations

1. Turrión Nieves, A.I.
2. Martín Holguera, R.
3. Sánchez Atrio, A.I.
4. Pérez Gómez, A.
5. Cuende Quintana, E.