Text and Data Mining valid from 2019-10-16
Received: 16 January 2019
Accepted: 20 September 2019
First Online: 16 October 2019
Ethics approval and consent to participate
: This study does not require any approval by our IRB according our national regulation about simulation study (art 2, IRB- Regione Toscana, Enclosure A): all the participants, however, received the informed written consent procedure which was signed before starting and the participation in the research was completely voluntary. All the results remained confidential and completely anonymity for participants in the manuscript was ensured.
: Informed consent was obtained from participants before starting simulation.
: The authors declare that they have no competing interests.