Text and Data Mining valid from 2019-04-03
Received: 17 December 2018
Accepted: 15 March 2019
First Online: 3 April 2019
Compliance with Ethical Standards
: The authors have no potential conflicts of interest with respect to the research, authorship, and publication of this article to declare.
: All procedures performed in this study involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards.
: All patients provided written informed consent for the publication and the use of their images.