Affiliation: | 1. Unit of Viral Infection and Immunity, National Centre of Microbiology, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain;2. Infectious Diseases – HIV Unit, Hospital General Universitario “Gregorio Marañón”, Madrid, Spain;3. Health Research Institute “Gregorio Marañón”, Madrid, Spain;4. Pathology Department, Hospital General Universitario “Gregorio Marañón”, Madrid, Spain |