Respiratory Tract Infections

• Birmingham, Alabama, United States
• Birmingham, Alabama, United States
• Fayetteville, Arkansas, United States
• Jonesboro, Arkansas, United States

• Anaheim Clinical Trials — Anaheim, California, United States
• Miami Research Associates — Miami, Florida, United States
• Broward Research Group — Pembroke Pines, Florida, United States
• Johnson County Clin-Trials — Lenexa, Kansas, United States

• Guangxi Zhuang Autonomous Region CDC — Nanning, Guangxi, China

• Department of Pediatrics, Department of Clinical Sciences, Università di Milano, L. Sacco Hospital — Milan, Italy
• Institute of Paediatrics, University of Milan, Fondazione IRCCS "Ospedale Maggiore Policlinico, Mangiagalli e Regina Elena" — Milan, Italy

• Anaheim Clinical Trials — Anaheim, California, United States
• Miami Research Associates — Miami, Florida, United States
• Broward Research Group — Pembroke Pines, Florida, United States
• Johnson County Clin-Trials — Lenexa, Kansas, United States

• Research Site — Miami, Florida, United States
• Research Site — Stockbridge, Georgia, United States
• Research Site — Portland, Oregon, United States

• Bogotá, Colombia

• Canisius Wilhelmina Hospital — Nijmegen, Gelderland, Netherlands
• Onze Lieve Vrouwen Gasthuis — Amsterdam, North Holland, Netherlands
• Medisch Spectrum Twente — Enschede, Overrijssel, Netherlands
• Medisch Centrum Leeuwarden — Leeuwarden, Provincie Friesland, Netherlands

Not specified

• UNC Center for Environmental Medicine, Asthma and Lung Biology — Chapel Hill, North Carolina, United States