**Author details**

Nokuthula Vilakazi1 \*, Kumbukani Nyirenda1,2 and Emmanuel Vellemu1,3

1 Future Africa, University of Pretoria, South Africa

2 College of Medicine, University of Malawi, Blantyre, Malawi

3 Department of Water Resources Management, Malawi University of Science and Technology, Limbe, Malawi

\*Address all correspondence to: nokuthula.vilakazi@fabi.up.ac.za

© 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.
