Funding for this research was provided by:
Text and Data Mining valid from 2019-09-07
Received: 24 May 2019
Accepted: 29 August 2019
First Online: 7 September 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: The study has been approved by the Basse-Normandie research ethics committee and has been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards.
: Informed written consent was obtained from all individual participants included in the study.