1. Department of Infectious Diseases Hospital Universitario Ramón y Cajal Madrid Spain
2. Department of Prevention of Occupational Risks Hospital Universitario Ramón y Cajal Madrid Spain
3. Department of Microbiology IRYCIS, Instituto Ramón y Cajal de Investigaciones Sanitarias CIBERESP Hospital Universitario Ramón y Cajal Madrid Spain
4. Laboratory of Immunovirology IRYCIS, Instituto Ramón y Cajal de Investigaciones Sanitarias CIBERESP Hospital Universitario Ramón y Cajal Madrid Spain