Nasal Polyps

• Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec — Québec, Quebec, Canada

• California Sinus Centers — Atherton, California, United States
• Cedars-Sinai Medical Center, Sinus Center of Excellence — Los Angeles, California, United States
• Sacramento Ear, Nose and Throat — Sacramento, California, United States
• Colorado Ear, Nose, Throat & Allergy — Colorado Springs, Colorado, United States

• University Hospital Ghent — Ghent, Belgium
• Univ.-HNO-Klinik, St. Elisabeth Hospital — Bochum, Germany

• Université de Sherbrooke, Département de chirurgie — Sherbrooke, Quebec, Canada

• Yale Physicians Bldg — New Haven, Connecticut, United States
• Yale ENT Stratford — Stratford, Connecticut, United States

• Achieve Clinical Research — Birmingham, Alabama, United States
• PAB Clinical Research — Brandon, Florida, United States
• Sneeze Wheeze and Itch Associates — Normal, Illinois, United States
• Professional Research Network of Kansas — Wichita, Kansas, United States

• Allergy Clinic, London Health Sciences Centre — London, Ontario, Canada

Not specified

• Investigational Site Number 840014 — Rolling Hills Estates, California, United States
• Investigational Site Number 840015 — Denver, Colorado, United States
• Investigational Site Number 840013 — Boston, Massachusetts, United States
• Investigational Site Number 840002 — Lake Oswego, Oregon, United States

• Massachusetts General Hospital — Boston, Massachusetts, United States