Text and Data Mining valid from 2019-02-12
Received: 5 December 2018
Accepted: 25 January 2019
First Online: 12 February 2019
Compliance with ethical standards
: All procedures performed in study involving human participant was in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: None of the authors have conflicts of interest to declare.
: Informed consent was obtained from a participant included in the study.