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Article History

Received: 5 April 2019

Accepted: 31 March 2020

First Online: 16 April 2020

Ethics approval and consent to participate

: 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. The study was conducted according to “Sapienza” University of Rome Ethics Committee. The medical staff informed all participants about the existence of this study; participants voluntarily accepted to participate in the study and all signed informed consent.

: Not applicable.

: The authors declare that they have no competing interests.