1. Department of Microbiology, Hospital Universitari de Bellvitge, Instituto de Investigación Biomédica de Bellvitge (IDIBELL), University of Barcelona, Barcelona, Spain.
2. Research Network for Respiratory Diseases (CIBERES), Instituto de Salud Carlos III (ISCIII), Madrid, Spain.
3. Infectious Diseases Department, Hospital Universitari de Bellvitge, Instituto de Investigación Biomédica de Bellvitge (IDIBELL), University of Barcelona, Barcelona, Spain.
4. Spanish Network for Research in Infectious Diseases (REIPI RD06/0008), Barcelona, Spain.