Article History
Received: 4 November 2018
Accepted: 4 March 2019
First Online: 8 March 2019
Ethics approval and consent to participate
: This study followed the rules Declaration of Helsinki. Written informed consent was obtained from the two patients.
: Written consent to be published was obtained from both patients in this article.
: The authors declare that they have no conflict of interest.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.