First Online: 29 March 2019
Compliance with ethical guidelines
: B. Mazurek is director and M. Burkart, P. Brueggemann, and A.J. Szczepek are full-time employees of organizations offering tinnitus treatments. D. Frank is managing director of ISM Global Dynamics, the organization conducting the study.
: The study was conducted in accordance with the International Code on Market and Social Research of the International Chamber of Commerce/European Society for Opinion and Market Research and current BVM (Berufsverband Deutscher Markt- und Sozialforscher e. V.) guidelines. All respondents gave their consent.
: The supplement containing this article is not sponsored by industry.