First Online: 1 March 2018
Compliance with Ethical Standards
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the University College London (UCL) Ethics Committee (project ID 2789/001) 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.
: ME, JM, MJB, and BS were employed by Headspace Inc. at the time of conducting this study.