Pétillon, Philippe
Wilms, Guido http://orcid.org/0000-0001-5580-8128
Raftopoulos, Christian
Duprez, Thierry
Article History
Received: 23 July 2018
Accepted: 30 July 2018
First Online: 8 August 2018
Compliance with ethical standards
:
: No funding was received for this study.
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. For this type of study formal consent is not required.
: For this type of retrospective study formal consent is not required.