Text and Data Mining valid from 2018-11-19
Received: 31 May 2018
Accepted: 14 November 2018
First Online: 19 November 2018
Compliance with Ethical Standards
: Nothing to declare.
: The present study was conducted in accordance with the Declaration of Helsinki, and it was previously approved by the Institutional Review Board of our hospital.
: All the enrolled volunteers gave their written informed consent.