Text and Data Mining valid from 2019-02-09
Received: 20 December 2018
Revised: 18 January 2019
Accepted: 21 January 2019
First Online: 9 February 2019
Compliance with ethical standards
: The study was approved by the Ethics Committee of the Medical Board (CHU Lyon). This study was conducted in accordance with the Declaration of Helsinki.
: The authors declare that they have no conflict of interest.