Funding for this research was provided by:
Text and Data Mining valid from 2018-07-12
First Online: 12 July 2018
Compliance with Ethical Standards
: All authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Specifically, an ethical approval for the study was obtained from the ethical committee of Santa Croce Hospital (Cuneo, Italy).
: Informed consent was obtained from all individual participants included in the study.