Document is current

Article History

Received: 22 April 2020

Revised: 14 May 2020

Accepted: 20 May 2020

First Online: 9 June 2020

Compliance with ethical standards

:

: The scientific guarantor of this publication is Dr. GERVAISE Alban.

: The authors of this manuscript declare no relationships with any companies, whose products or services may be related to the subject matter of the article.

: One of the authors (GERVAISE Alban) has significant statistical expertise.

: Written informed consent was not required for this study because of the retrospective design of the study.

: Institutional Review Board approval was obtained.

: • retrospective• observational• performed at one institution

Free to read: This content has been made available to all.