Text and Data Mining valid from 2018-08-03
Received: 23 February 2018
Accepted: 18 July 2018
First Online: 3 August 2018
Ethics approval and consent to participate
: The study was performed in accordance with the Declaration of Helsinki and the protocol was reviewed and approved by the Institutional Review Board of the hospital. All patients provided signed informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.