Text and Data Mining valid from 2020-02-14
First Online: 14 February 2020
Compliance with Ethical Standards
: On behalf of all authors, the corresponding author states that there is no conflict of interest.
: The data from this paper have not been previously presented. My coauthors and I do not have any interests that might be interpreted as influencing the research, and the ethical standards of APA were followed in the conduct of the study. In particular, the research was performed in accordance with the declaration of Helsinki and was approved by local ethics committee. Furthermore, informed consent to participate in the study was obtained from participants and/or their parents.