1 Servei de Malalties Infeccioses, Hospital Universitari Vall d'Hebron, Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain; Spanish Network for Research in Infectious Diseases (REIPI), Madrid, Spain. Electronic address: nufernan@gmail.com.
2 Servei de Malalties Infeccioses, Hospital Universitari Vall d'Hebron, Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain; Spanish Network for Research in Infectious Diseases (REIPI), Madrid, Spain.