Copyright: 
©
201
7 Keane, Khupe & Seehawer
This is an open access article distributed under the terms of the Creative Commons Attribution Non
-
Commercial 
License,  which  permits  unrestricted  non
-
commercial  use,  distribution,  and  reproduction  in  any  medium, 
provided the original author and source are 
credited.
Med mindre annet er angitt, så er denne innførselen lisensiert som Copyright: © 201 7 Keane, Khupe & Seehawer This is an open access article distributed under the terms of the Creative Commons Attribution Non - Commercial License, which permits unrestricted non - commercial use, distribution, and reproduction in any medium, provided the original author and source are credited.