1. Department of Internal Medicine, Clínica Universidad de Navarra, Pamplona, Spain
2. Division of Infectious Diseases, Clínica Universidad de Navarra, Pamplona, Spain
3. Department of Thoracic Surgery, Clínica Universidad de Navarra, Pamplona, Spain
4. Department of Clinical Microbiology, Clínica Universidad de Navarra, Pamplona, Spain