1. Department of Medicine, Universidad Autónoma de Madrid, Madrid, Spain
2. Department of Medicine and Laboratory, Gambo Rural General Hospital, Kore, West-Arsi, Gambo, Ethiopia
3. Division of Infectious Diseases, Fundación Jiménez Díaz, Madrid, Spain
4. Otorhinolaryngology-Head and Neck Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
5. Department of Microbiology, Universitary Hospital Príncipe de Asturias, Alcalá de Henares, Madrid, Spain
6. Department of Internal Medicine, General University Hospital of Alicante, Miguel Hernández University, Elche, Alicante, Spain