Text and Data Mining valid from 2020-02-04
Received: 16 October 2019
Accepted: 30 January 2020
First Online: 4 February 2020
Ethics approval and consent to participate
: The study was approved by the local ethics committee (Comité de Protection des Personnes Est I, Faculté de Médecine, Dijon; committee’s reference number: 2009/46) and the competent authority. The study was performed in accordance with the Declaration of Helsinki.As this study is a retrospective one, a non-opposition letter has been delivered to the patients in order to inform them about the research and their right to object to the use of their data.
: Not applicable.
: The authors declare that they have no competing interests.