Department of Internal Medicine, Hospital Marqués de Valdecilla-IDIVAL, University of Cantabria, RETICEF, Santander, Spain;
Department of Intensive Care, Hospital Marqués de Valdecilla, Santander, Spain;
Department of Anatomic Pathology, Hospital Marqués de Valdecilla, Santander, Spain;
Lymphomatoid; Granulomatosis; Common; Variable; Immunodeficiency; Epstein-Barr; Virus;