Selected Credentials:
| Friedrich Ebert Foundation | |
| Friedrich Ebert Foundation |  |
| Yeson Voice Center, Seoul |  |
| National Association of Ergotherapists in Germany |  |
| German Energy Agency |  |
| EEGinfo |  |
| wittenbergmedia |  |
| National Association of Customer Advice Centres |  |
| Prince Donnersmarck Foundation, Berlin |  |
| German Human Rights Institute |  |
| Institute for Foreign Relations |  |
| Department of Foreign Affairs (Germany) |  |
| Messe Berlin GmbH (Berlin Trade Fair) |  |
| Association of Researching Pharmazeutic Manufacturers |  |
| audio:link |  |