Received: 27 May 2019
Accepted: 22 August 2019
First Online: 18 September 2019
Ethics approval and consent to participate
: The study was approved by the ethical research committees OUEST V, Rennes, F-France (reference number: NCT02469922).
: All subjects provided written informed consent prior to be included in the current study.
: The authors declare that they have no competing interests.