1. Infectious Disease Department, Tor Vergata University Hospital, University of ‘La Sapienza’, Rome, Italy
2. Clinical Research & Innovation in Pneumonia & Sepsis (CRIPS), Vall d’Hebron Institute of Research, Barcelona, Spain
3. Centro de Investigación Biomédica En Red – Enfermedades Respiratorias (CIBERES), Vall d’Hebron Institute of Research, Barcelona, Spain
4. Department of Medicine, Universitat Autònoma de Barcelona, Barcelona, Spain