IgA deficiency and autoimmune comorbidities in Juvenile Idiopathic Arthritis David Torres-Fernandez; Iñigo Perez-Heras; Beatriz Fernandez-Manso; Pilar Galán del Río; Luis Ignacio Gonzalez-Granado; Jaime de Inocencio;

Immune disorders associated with juvenile recurrent chronic parotitis Antonio David Hidalgo-Santos; Rubén Gastón-Téllez; Begoña Ferrer-Lorente; Raquel Pina-Pérez; Manuel Oltra-Benavent;