Funding for this research was provided by:
Ministero della Salute (CCM project "Area Azioni Centrali")
Received: 12 December 2018
Accepted: 16 June 2019
First Online: 27 June 2019
Ethics approval and consent to participate
: not applicable. Informed consent was not necessary. All activities, regardless of their complexity or depth, were conducted in accordance with Italian regulations on privacy (D.Lgs. 101/2018) and with the approval of the national institutes involved. Since WHIP-Salute database has been included, under the responsibility of the Ministry of Health, in the National Statistics Program (NSP) with the code SAL-00054 the Guarantor of privacy had approved the construction and the use of this database. The current NSP 2017–2019 was approved with a Decree of the President of the Republic:ExternalRef removed
: not applicable.
: The authors declare that they have no competing interests.