Received: 6 February 2019
Accepted: 23 October 2019
First Online: 21 November 2019
Ethics approval and consent to participate
: According to the applicable regulation in 2015: the French Public Health Law (article 88) this research was a non-biomedical research (all acts are performed and products used in the usual way, without any additional or unusual diagnostic or monitoring procedures) therefore without required written consent. ExternalRef removed. This was approved by Rouen University Hospital’s Institutional Review Board (E2017–10).
: Not applicable.
: The authors declare that they have no competing interests.