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Article History

Received: 21 February 2021

Accepted: 9 June 2021

First Online: 12 August 2021

Declarations

:

: The methodology was approved by three national ethics commissions: the CCTIRS (Advisory Committee for Data Processing in Health Research, study registered under n°11–143), the ISP (Institute of Public Health, study registered under n°C11-63) and the CNIL (French Commission on Individual Data Protection and Public Liberties, study registered under n°911290). Confidentiality is assured for all participants regarding any personal responses and information provided, as all data collected were anonymized. The study was in accordance with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

: Each selected survivor received a letter from the National Health Insurance Fund inviting him/her to participate in the survey. Participants had to sign and send back an informed consent form.

: Not applicable. Confidentiality is assured for all participants regarding any personal responses and information provided, as all data collected were anonymized.

: The authors declare that they have no conflict of interest.