Text and Data Mining valid from 2018-09-22
Received: 22 May 2018
Accepted: 11 September 2018
First Online: 22 September 2018
Compliance with ethical standards
: All authors declare that they have no relationships or interests that could have direct or potential influence or impart bias on the work.
: The study was authorized by the local ethics committee (IRB 17–769) in accordance with the ICH Guideline for Good Clinical Practice (GCP) and the Declaration of Helsinki.
: All patients gave written consent to participate in the study.