Text and Data Mining valid from 2019-12-01
Received: 6 August 2019
Accepted: 22 November 2019
First Online: 3 December 2019
Ethics approval and consent to participate
: This study holds ethical approval from the ethics committee at the University of Göttingen, Germany, and also the ethics committee at Syiah Kuala University in Banda Aceh, Indonesia. All participants signed written consent forms which were reviewed verbally prior to the interview.
: Not applicable.
: The authors declare that they have no competing interests.