Funding for this research was provided by:
Mäxi Foundation Switzerland
Article History
Received: 11 March 2018
Accepted: 7 August 2018
First Online: 16 August 2018
Ethics approval and consent to participate
: This paper does not contain any studies with human participants or animals performed by any of the authors. No ethical approval was required.All the data supporting our findings in this paper were freely downloaded from the United Nations (UN) agencies’ websites.
: Not applicable.
: The authors declare no competing of interest.
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