Article History
Accepted: 24 May 2017
First Online: 27 May 2017
Compliance with ethical standards
:
: Authors Jennifer Heath and Paul Norman declare that they have no conflicts of interest. Authors Martin Christian and Alan Watson were employed within the trust in which the research took place.
: 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.
: Informed consent was obtained from all individual participants included in the study.