Text and Data Mining valid from 2019-03-06
Received: 28 November 2018
Accepted: 21 February 2019
First Online: 6 March 2019
Compliance with Ethical Standards
: All authors declare that they have no conflict of interest.
: 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.
: Informed consent for the procedure for anonymized publication of this series of patients was obtained from all individual participants included in the study.