Article History
First Online: 21 August 2018
Compliance with Ethical Standards
:
: Laura Pedrini, Clarissa Ferrari and Alberto Ghilardi declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were complied with the ethical standards of the Italian National Research Council and with the 1964 Declaration of Helsinki and subsequent amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants who participated in the study.