Funding for this research was provided by:
Regione Autonoma della Sardegna (Legge Regionale n. 7/2007 – TENDER n. 13 RAS – Bando 2013.)
Received: 10 June 2019
Accepted: 20 February 2020
First Online: 25 February 2020
Ethics approval and consent to participate
: This study was in accordance with the ethical standards of the institutional research committee at the University of Cagliari, Declaration of Helsinki in 1995 (as revised in Edinburgh 2000), and with Italian privacy law (Decree No. 196/2003). We consulted the Ethics Committee of the University of Cagliari, which stated that no approval was required for non-clinical cross-sectional studies. Verbal informed consent was obtained from all individual participants included in the study. To ensure fully anonymized participation in the study, the local Ethics Committee suggested to ask for verbal consent. This is in line with the Italian privacy law (Decree No. 196/2003).
: Not applicable.
: The authors declare that they have no competing interests.