1. Department of Functional Biology, University of Oviedo, 33006 Oviedo, Spain
2. Instituto Universitario Fernández-Vega, Fundación de Investigación Oftalmológica, University of Oviedo, 33012 Oviedo, Spain
3. Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain
4. Pneumology Service, Institute for Health Research (IP), Hospital Universitario de La Princesa, 28006 Madrid, Spain
5. Department of Pathology, Hospital Universitario Central de Asturias, 33011 Oviedo, Spain
6. Department of Microbiology, Hospital Universitario Central de Asturias, 33011 Oviedo, Spain