Text and Data Mining valid from 2019-09-04
Received: 7 June 2019
Accepted: 28 August 2019
First Online: 4 September 2019
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board. The reporting of patient information has been done in accordance to our institution’s policies. Informed consent was not required because of the retrospective nature of the study.
: Not applicable.
: The authors declare that they have no competing interests.