Text and Data Mining valid from 2018-12-04
First Online: 4 December 2018
Compliance with ethical standards
: The author declares that they have no conflict of interest.
: 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.