Funding for this research was provided by:
Received: 22 June 2021
Accepted: 21 December 2021
First Online: 8 January 2022
: This study analysed secondary data. All methods were carried out in accordance with relevant guidelines and regulations.
: Not applicable.
: Odile Sauzet is an Editorial Board Member of BMC Public Health. VD and OR declare that they have no competing interests.