Bergqvist, Christina
Hemery, François
Ferkal, Salah
Wolkenstein, Pierre http://orcid.org/0000-0001-8194-457X
Article History
Received: 26 April 2020
Accepted: 7 July 2020
First Online: 14 July 2020
Ethics approval and consent to participate
: Approved by the national institute concerning health data (INDS) and conducted according to local standards and laws (MR003 standard and Law Informatique et liberté number 78–1, specifying that retrospective data studies are not considered by French law as involving human subjects).
: Not applicable.
: The authors declare that they have no competing interests.