Funding for this research was provided by:
National Institute of Mental Health (R25 TW 008981)
Received: 29 December 2016
Accepted: 25 January 2018
First Online: 17 February 2018
Ethics approval and consent to participate
: However, prior to the study a formal application for ethics exemption was made to the Research Ethics Committee of the Stellenbosch University since the study did not involve human, human data or animals.
: Not applicable
: All authors declare that they have no competing interests.
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