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First Online: 8 February 2018

Ethics approval and consent to participate

: Regulatory authorizations were granted for the quantitative research part focused on the patients’ personal health data: a favorable opinion from the Ethics Committee of the Brest University Hospital (CHU) (session on 13 May 2014) and a notification of authorization by CNIL for a change in data processing stipulating the addition of a new recipient of the Registry data within the framework of a care quality improvement program (DR2015040 on 16 February 2015).

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: The authors declare that they have no competing interests.

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