1. Department of Internal Medicine, University Hospital of Santiago, University of Santiago de Compostela, Santiago de Compostela, Spain
2. Immunology, Cancer and GlycoMedicine, Institute for Research and Innovation in Health (i3S), University of Porto, Porto, Portugal
3. Department of Clinical Epidemiology, University Hospital of Santiago, Santiago de Compostela, Spain
4. Primary Care Center, A Estrada, Spain
5. Department of Allergy, University Hospital of Santiago, University of Santiago de Compostela, Santiago de Compostela, Spain