Text and Data Mining valid from 2019-01-22
Received: 19 September 2018
Accepted: 8 January 2019
First Online: 22 January 2019
Compliance with ethical standards
: All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation and with the Helsinki Declaration of 1975, as revised in 2008.
: Informed consent was obtained from all patients for being included in the study. All relevant institutional review boards approved the study.