Received: 24 November 2017
Accepted: 20 April 2018
First Online: 2 May 2018
Ethics approval and consent to participate
: Study participation was voluntary and informed written consent obtained from each student. Individual ethics approval was also obtained where appropriate from each country’s institution.SingaporeApproval was obtained from the NUS Institutional Review Board (NUS-IRB Ref No 08–274) for both the NUS and DUKE-NUS sites in Singapore.AustraliaApproval was obtained from James Cook University Human Research Ethics Committee, approval numbers H5595 & H3031.USAApproval was obtained from DUKE Medicine Institutional Review Board for Clinical Investigations, protocol number 00013362.IsraelApproval was obtained from the Ethics Committee of Soroka University Medical Center, approval number 10345.NorwayThe Regional Committee for Medical Research Ethics permitted this study to be exempt from ethics approval and also confirmed that according to Norwegian legislation informed consent was not mandatory.ChileApproval was obtained from Comité de Ética de Investigación de la Escuela de Medicina, Pontificia Universidad Católica de Chile, protocol number CE# 87/09.
: The authors declare that they have no competing interests.
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