- Correspondence to Dr Louis-Jacques van Bogaert, National Health Laboratory Service and University of Limpopo, Post Net Suite 7, Private Bag x8689, Groblersdal 0470, Polokwane 0700, South Africa;
- Received August 7, 2014
- Revised September 9, 2014
- Accepted September 25, 2014
- First published May 19, 2015.
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