Text and Data Mining valid from 2019-08-16
Received: 9 May 2019
Revised: 5 July 2019
Accepted: 30 July 2019
First Online: 16 August 2019
Compliance with ethical standards
: The study was approved by the local Ethics Committee. All procedures were in accordance with the ethical standards of the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: All patients provided written informed consent for participation before undergoing any procedures.
: The authors have no financial relationships relevant to this article to disclose.