Paranasal Sinus Diseases

• Marcin Straburzyński — Dźwierzuty, Warmian-Masurian Voivodeship, Poland
• Department of Neurology, Wrocław Medical University — Wroclaw, Poland

• University Göttingen — Göttingen, Germany
• UNIVERSITÄTSMEDIZIN der Johannes Gutenberg-Universität Mainz — Mainz, Germany
• University LMU Munich — Munich, Germany
• HNO-Zentrum Mangfall-Inn — Rosenheim, Germany

• University Göttingen — Göttingen, Germany
• UNIVERSITÄTSMEDIZIN der Johannes Gutenberg-Universität Mainz — Mainz, Germany
• University Munich — Munich, Germany

• Sandoz Investigative Site — Burgas, Bulgaria
• Sandoz Investigative Site — Gabrovo, Bulgaria
• Sandoz Investigative Site — Plovdiv, Bulgaria
• Sandoz Investigative Site — Sliven, Bulgaria

• Memorial Sloan Kettering Basking Ridge — Basking Ridge, New Jersey, United States
• Memorial Sloan Kettering Monmouth — Middletown, New Jersey, United States
• Memorial Sloan Kettering Bergen — Montvale, New Jersey, United States
• Memorial Sloan Kettering Commack — Commack, New York, United States

• Korea University Guro Hospital — Seoul, South Korea

• Stanford Health Care — Stanford, California, United States
• NorthShore University Health System — Evanston, Illinois, United States
• Mayo Clinic — Rochester, Minnesota, United States
• Albert Einstein — The Bronx, New York, United States

Not specified

• ENT Associates of South Florida — Boca Raton, Florida, United States
• Johns Hopkins University — Baltimore, Maryland, United States
• Brigham and Women's Hospital — Boston, Massachusetts, United States
• Wake Research Associates — Raleigh, North Carolina, United States

Not specified