Text and Data Mining valid from 2018-10-16
Received: 30 December 2017
Revised: 29 September 2018
Accepted: 4 October 2018
First Online: 16 October 2018
Compliance with ethical standards
: The authors have no competing interests.
: All procedures followed were in accordance with the ethical standards of the, responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2008.
: Informed consent was obtained from all patients for being included in the study.