Text and Data Mining valid from 2018-10-26
Received: 7 April 2018
Accepted: 17 October 2018
First Online: 26 October 2018
Compliance with ethical standards
: None to declare.
: All procedures performed in studies involving human participants were 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.
: This article does not contain any studies with animals performed by any of the authors.
: Informed consent was obtained from all individual participants included in all studies in our review.