Acute Otitis Media

• Denver Health and Hospital Authority — Denver, Colorado, United States
• AllianceChicago — Chicago, Illinois, United States
• Intermountain Health — Murray, Utah, United States

• Advanced ENT and Allergy — Louisville, Kentucky, United States
• Regional Otolaryngology Head and Neck Associates — Cherry Hill, New Jersey, United States
• Rutgers Robert Wood Johnson Medical School — New Brunswick, New Jersey, United States
• Columbia University Vagelos College of Physicians and Surgeons — New York, United States

• Vaasa Central Hospital — Vaasa, Pohjanmaa, Finland
• Turku University Hospital — Turku, Southwest Finland, Finland

Not specified

• Children's Hospital of Philadelphia — Philadelphia, Pennsylvania, United States
• University of Pennsylvania Health System — Philadelphia, Pennsylvania, United States

• University of Alberta — Edmonton, Alberta, Canada

• Desert Clinical Research — Mesa, Arizona, United States
• Visions Clinical Research — Tucson, Arizona, United States
• Childrens Investigational Research Program — Bentonville, Arkansas, United States
• Visions Clinical Research — Boynton Beach, Florida, United States

• South Coast ENT — Port Saint Lucie, Florida, United States
• Advanced ENT and Allergy — Louisville, Kentucky, United States
• Ear Medical Group — San Antonio, Texas, United States
• Evergreen Sinus Center — Kirkland, Washington, United States

• Spartanburg ENT — Spartanburg, South Carolina, United States

• Arkansas Children's Hospital — Little Rock, Arkansas, United States
• Children's Hospital of Los Angeles - University of Southern California School of Medicine — Los Angeles, California, United States
• Rady Children's Hospital — San Diego, California, United States
• Children's Memorial Hospital- Feinberg School Medicine, Northwestern University — Chicago, Illinois, United States