Boldrini, Laura
Giordano, Mirella
Melfi, Franca
Lucchi, Marco
Fontanini, Gabriella
Article History
Received: 19 November 2018
Accepted: 12 April 2019
First Online: 2 May 2019
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: Our study was conducted in accordance with the ethical standards of our institutional research committee and with the 1964 Helsinki declaration.