Funding for this research was provided by:
CNRS (PICS-06724, 2015-2017, MSHS-T USR 3414, PEPS 2016)
Pontificia Universidad Católica del Ecuador (M13434, N13419)
Article History
Received: 4 June 2019
Accepted: 18 December 2019
First Online: 8 January 2020