Received: 5 February 2020
Accepted: 17 May 2020
First Online: 29 May 2020
Ethics approval and consent to participate
: According to French legislation in this period, and because no intervention was performed on patients, no written informed consent was given by the patients (Law No. 2012–300 of 5 March 2012: ExternalRef removed). Our study protocol followed the ethical guidelines of the declaration of Helsinki and was approved by our institutional review board (Comité de Protection des Personnes – Est (GIRCI Grand Est) N° 2020-A02771–54.
: Not applicable.