Funding for this research was provided by:
Bill and Melinda Gates Foundation
Article History
Received: 12 May 2017
Accepted: 31 May 2017
First Online: 15 June 2017
Change Date: 6 November 2017
Change Type: Correction
Change Details: After publication of the original article [1], it came to the authors’ attention that the Acknowledgements section was not completed correctly. The Acknowledgements of the article should have been as follows.