Acknowledgements

This course was written by Arosha K. Bandara. It was last updated in December 2019.

Except for third party materials and otherwise stated in the acknowledgements section, this content is made available under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence [Tip: hold Ctrl and click a link to open it in a new tab. (Hide tip)] .

The material acknowledged below is Proprietary and used under licence (not subject to Creative Commons Licence). Grateful acknowledgement is made to the following sources for permission to reproduce material in this course:

Images

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Figure 11 © Danil Melekhin (via Getty Images)

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Audio visual

Video

1 Online, the new frontline © HM Government 

1.3 and 2.1 © The Open University

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