1. North Metropolitan International Health Unit, Institut Català de la Salut, Universitat Autònoma de Barcelona, Barcelona, Spain
2. Department of Microbiology, Hospital Universitari Germans Trias i Pujol, Institut Català de la Salut, Universitat Autònoma de Barcelona, Badalona, Spain
3. Department of Health, Generalitat of Catalonia, Barcelona, Spain
4. Internal Medicine Department. Hospital Municipal de Badalona. Badalona, Spain
5. Internal Medicine Department. Hospital de l'Esperit Sant, Santa Coloma de Gramenet, Spain
6. Department Infectious Diseases, Hospital Universitari Germans Trias i Pujol, Institut Català de la Salut, Universitat Autònoma de Barcelona, Badalona, Spain