Text and Data Mining valid from 2019-04-03
Received: 6 November 2017
Accepted: 12 March 2019
First Online: 3 April 2019
Compliance with ethical standards
: Author DF, Author LCM, Author RE, Author MM, Author FV and Author EN declare 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 1964 and later versions. Informed consent was obtained from all patients for being included in the study.