1. Hörzentrum Oldenburg GmbH, Department Market and Effects Research, Oldenburg, Germany,
2. Center of Excellence Hearing4all, Oldenburg, Germany,
3. HörTech gGmbH, Oldenburg, Germany,
4. Sivantos GmbH, Erlangen, Germany,
5. University of Kaiserslautern Center for Cognitive Science, Kaiserslautern, Germany, and
6. Jean Uhrmacher-Institute for Clinical ENT-Research, University of Cologne, Cologne, Germany