Respiratory Tract Infections

• G. D'Annunzio University — Chieti, Italy
• Office of Hygiene and Public Health, ASL Lanciano — Lanciano, Italy

• G. D'Annunzio University — Chieti, Italy
• Office of Hygiene and Public Health, ASL Lanciano — Lanciano, Italy

• Ufficio Igiene e Sanità Pubblica di Lanciano, ASL, Via S. Spaventa, 37 — Lanciano, Italy
• Dipartimento di Medicina e Scienze dell'Invecchiamento Università G. D'AnnunzioVia dei Vestini — Chieti, Italy

• Harvard School of Public Health — Boston, Massachusetts, United States

• Roosevelt Pediatric Clinic — Seattle, Washington, United States
• Skagit Valley Pediatrics — Skagit Valley, Washington, United States

• Child Health Institute, University of Washington — Seattle, Washington, United States

• University of California — San Francisco, California, United States

• University of Virginia, Charlottesville — Charlottesville, Virginia, United States

• The Summit Medical GroupDepartment of Otolaryngology — Summit, New Jersey, United States
• The Medical University of South Carolina Department of Otolaryngology — Charleston, South Carolina, United States
• University of Tennessee Department of Otolaryngology — Memphis, Tennessee, United States

Not specified