Barrett, David E.
Katsiyannis, Antonis
Article History
First Online: 5 June 2017
Compliance with Ethical Standards
: The project has been conducted in compliance with ethical standards regarding the use of secondary data.
: The authors declare that they have no competing interests.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. This report was based on analyses of data on human participants; the report was based on analyses of extant (secondary) data and thus did not require the informed consent of individual participants.