References national
- Carl-von-Ossietzky-University Hospital, 29129 Oldenburg
- Deister-Süntel-Clinic, 31348 Bad Münder
- Evangelic hospital Oldenburg, 26122 Oldenburg
- ENT-clinic of Hufeland-hospitals, 99425 Weimar
- ENT-clinic of the state hospitals, 02826 Görlitz
- Hospital Bad Rappenau, 74906 Bad Rappenau
- Hospital Bad Salzungen, 36433 Bad Salzungen
- Sana-Hospital Rügen GmbH, 18528 Bergen / Rügen
- Hospital “St. Gertrauden”, 10713 Berlin
- State hospital Dortmund, 44137 Dortmund
- State hospital Darmstadt, 64297 Darmstadt
- State hospital, 38302 Wolfenbüttel
- State hospital “St. Georg”, 04129 Leipzig
- Carl Gustav Carus University Hospital, 01307 Dresden
References international
- Al Beida Hospital, Libya
- NAFTAN Open-Joint Stock Company “Sanatorium Novopolotsk”, Belarus
- Hospital Opca bolnica, Koprivnica, Croatia
- Melaka Hospital, Malaysia
- State Hospital Mátészalka, Hungary
- Ostrava Hospital, Ostrava, Czech Republic
- Medical Center Havanna, Cuba
- Presidential Clinic Minsk, Belarus
- Presidential Policlinic Almaty, Kazakhstan
- Presidential Clinic Moscow, Russia
- THORAX-Clinic Sofia, Bulgaria
- Al Amiralam Hospital, Tehran, Iran
- Central Hospital Athens, Greece
- King Abdulaziz University Hospital, Jeddah, Saudi Arabia
- Institute for Medical Specialization (KIMS), Kuwait
- Ahmadi Hospital of Kuwait Oil Company, Kuwait
- E.E.N.T. Hospital of Fu Dan University, Shanghai, China
- Al Esraa Medical Center, Doha, Qatar
- Mediclinic “Welcare Hospital” Middle East, Dubai, UAE
- Ninh Binh General Hospital, Ninh Binh, Vietnam
- Alhamdaniyah General Hospital, Ninava City, Iraq
- University Hospital “Dr. Carol Davila”, Bucarest, Romania
- Otolaryngologic Institute “Prof. O.S. Kolomizhenko”, Kiev, Ukraine
- furthermore: 17 hospitals in Syria