Text and Data Mining valid from 2019-04-11
Received: 27 November 2018
Accepted: 1 April 2019
First Online: 11 April 2019
Compliance with ethical standards
: None of the authors has any financial or conflicting interests to disclose.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.
: This article does not contain any studies with animals performed by any of the authors.