Text and Data Mining valid from 2019-01-19
Received: 30 November 2017
Accepted: 15 January 2019
First Online: 19 January 2019
Compliance with ethical standards
: The protocol was approved by the ethical committee of France-Sud Est VI (number 2015-A01755–44). In addition, all procedures performed in studies involving human participants were in accordance with the 1964 Helsinki declaration and its later amendments.
: Informed consent was obtained from all individual participants included in the study.