Respiratory Tract Infections

• Hôpital de l'Enfance — Lausanne, Canton of Vaud, Switzerland

• Pediatric Emergency Center, Al Saad — Doha, Qatar

• Monroe Carell Jr. Children's Hospital at Vanderbilt University — Nashville, Tennessee, United States

• University of California at San Diego — San Diego, California, United States
• Denver Public Health — Denver, Colorado, United States
• George Washington University — Washington D.C., District of Columbia, United States
• National Institutes of Health Clinical Center, 9000 Rockville Pike — Bethesda, Maryland, United States

• Steven and Alexandra Cohen Children's Medical Center of New York — New Hyde Park, New York, United States

• Hamad Medical Corporation, Pediatric Emergency Center,Alsaad. — Doha, Baladiyat ad Dawhah, Qatar

• Reserach Site — Utrecht, Netherlands

• Curitiba, Brazil
• São Paulo, Brazil
• São Paulo, Brazil

Not specified

• Alice Mânica Müller — Porto Alegre, Rio Grande do Sul, Brazil