Funding for this research was provided by:
National Secretary of Higher Education, Science, Technology and Innovation of Ecuador (Convocatoria Abierta 2013)
Text and Data Mining valid from 2019-03-28
Received: 4 April 2018
Accepted: 6 February 2019
First Online: 28 March 2019
Change Date: 18 April 2019
Change Type: Correction
Change Details: Following the publication of this article , the authors reported a typesetting error in Table 1 that caused the columns of the table to be ordered incorrectly, and a typographical error in a sentence in the Conclusions section.
Ethics approval and consent to participate
: The study presented in this paper used publicly available secondary data. All mortality and censuses data is anonymized. Therefore, no ethics committee approval was necessary for this study.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.