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Authors
Leisegang, Kristian http://orcid.org/0000-0002-3003-8048
Henkel, Ralf
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Funding
Funding for this research was provided by:
South African Medical Research Council
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Article History
Received: 8 December 2017
Accepted: 6 March 2018
First Online: 22 March 2018
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: The authors declare that they have no competing interests in the study.
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