Scaratti, Chiara
Foitzek, Nicole
Grignani, Eleonora
Leonardi, Matilde
Raggi, Alberto
Coenen, Michaela
Article History
First Online: 12 June 2018
Compliance with ethical standards
: All procedures 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.
: The authors declare that they have no conflict of interest.