1. Department of Internal Medicine; Complejo Hospitalario Universitario; University of Santiago de Compostela; Spain
2. Department of Clinical Biochemistry; Complejo Hospitalario Universitario; Santiago de Compostela Spain
3. Department of Allergy; Complejo Hospitalario Universitario; Santiago de Compostela Spain
4. Department of Clinical Epidemiology; Complejo Hospitalario Universitario; Santiago de Compostela Spain