Text and Data Mining valid from 2019-11-28
Received: 10 August 2019
Accepted: 19 November 2019
First Online: 28 November 2019
Compliance with ethical standards
: All the authors declare that they have no conflict of interest.
: This study was conducted in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki Declaration and its later amendments.
: Written informed consent was obtained from all patients included in this study