Ossola, Paolo
Gerra, Maria Lidia http://orcid.org/0000-0002-0103-7417
Beltrani, Marco
Marchesi, Carlo
Article History
First Online: 19 November 2019
Compliance with Ethical Standards
: All procedures performed in this study, involving human participants, were in accordance with the ethical standards of the institutional research committee (Comitato Etico dell’Area Vasta Emilia Nord, segreteria di Parma, at the time of the study protocol approval, in 2009, Comitato Etico di Parma) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Informed written consent was obtained from all individual participants included in the study.
: The authors declare that they have no conflict of interest.