Text and Data Mining valid from 2020-01-11
Received: 28 October 2019
Accepted: 6 January 2020
First Online: 11 January 2020
Compliance with ethical standards
: The study was approved by the institutional review board. In accordance with the French public health law (Art. L 1121-1-1, Art. L 1121-1-2), written consent from the patients was not required for this type of study.