**Author details**

Modupeola Dada1 \*, Patricia Popoola1 , Samson Adeosun<sup>2</sup> and Ntombi Mathe3

1 Tshwane University of Technology, Pretoria, South Africa

2 University of Lagos, Akoka, Nigeria

3 Council for Scientific and Industrial Research, Gauteng, South Africa

\*Address all correspondence to: dadadupeola@gmail.com

© 2019 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
