Text and Data Mining valid from 2019-02-11
Received: 12 February 2018
Accepted: 10 January 2019
First Online: 11 February 2019
Compliance with Ethical Standards
: Guillaume Mercier and Ghislain Deslandes declare that they have no conflict of interest.
: All procedures performed in this study involving human participants were in accordance with the ethical standards of the institutional committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.