Consent to participate
The analysis of data as performed is authorised by a student consent form signed when enrolling to medical studies at the University of Cologne (“Declaration of voluntariness of attending the reformed medical curriculum”, including an agreement regarding “the collection, storage and scientific evaluation of my personal data” and “data concerning my studies (e.g. study duration, exam results)”). Filling in questionnaires as well as participating in interviews was totally voluntary; thus, it was seen as consent to participate, too.