Funding for this research was provided by:
Department for International Development (Aries code 202040–101)
Received: 5 September 2017
Accepted: 29 January 2018
First Online: 7 March 2018
Ethics approval and consent to participate
: Data for this study was primarily from secondary sources. However, the project was approved by the Clinical Research and Ethical Review Board of the Royal Veterinary College (project number 2504).
: Not applicable.
: The authors declare they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.