Funding for this research was provided by:
European Union Civil Protection and Humanitarian Aid (ECHO/ERC/BUD/2016/91004)
Text and Data Mining valid from 2018-07-01
Article History
Received: 5 March 2018
Accepted: 12 June 2018
First Online: 1 July 2018
Competing interests
: The authors declare that they have no competing interests.