Participants were informed about the content and duration of the study, that their participation was completely voluntary, that they could terminate their participation at any time, that their answers would be anonymous, and that aggregated data would be published in a scientific journal. Participants indicated their consent by clicking on the confirmation button they had read the information on data protection.
This research was funded by the German Federal Ministry of Education and Research and European Social Fund, grant number 02 L15 A121. Open access publication enabled by Bielefeld University.