Text and Data Mining valid from 2019-05-22
Received: 4 March 2019
Revised: 2 April 2019
Accepted: 8 April 2019
First Online: 22 May 2019
Compliance with ethical standards
: The scientific guarantor of this publication is Prof Adeline Ruyssen-Witrand.
: The authors declare that they have no conflict of interest.
: One of the authors (Delphine Nigon) has significant statistical expertise.No complex statistical methods were necessary for this paper.
: Written informed consent was obtained from all subjects (patients) in this study.
: Institutional Review Board approval was obtained.
: • Case–control study• Cross-sectional study• Diagnostic study• Observational• Performed at one institution