Received: 25 January 2019
Accepted: 26 July 2019
First Online: 6 August 2019
Ethics approval and consent to participate
: The need for ethics approval is deemed unnecessary according to national regulations, since only secondary data from open social media was analysed. No human studies were carried out and only publicly accessible sources were used. Personal or person-related content was collected, processed and used for the purposes of opinion studies in accordance with §30a Para. 1 BDSG (Federal Data Protection Act). The need for consent is deemed unnecessary according to national regulations in accordance with §30a Para. 2 BDSG, since collected data was rendered anonymous in such a way that the identification of the data subject is no longer possible.
: Not applicable.
: The authors declare that they have no competing interests.