Received: 4 December 2018
Accepted: 25 June 2019
First Online: 28 June 2019
Ethics approval and consent to participate
: Subjects were chosen based on voluntary enrollment. Research protocol did not fall within the perimeter of EU 536/2014 directive regarding clinical research. Data recording, storage and analysis were made in accordance with EU 679/2016 (GDPR) directive and the workflow approved by the DPO (Data Protection Officer ex art. 27 EU 679/2016) of University of Insubria.
: Voluntary subjects were given a written informative as for EU 679/2016. For video and audio recordings made for scientific purposes written consent is waived (art. 97 Italian Law 633/1941), so that verbal consent was collected from each subject after her reading of the informative sheet.
: The authors declare that they have no competing interests.