Text and Data Mining valid from 2018-05-16
Received: 7 March 2018
Accepted: 30 April 2018
First Online: 16 May 2018
Ethics approval and consent to participate
: This study was based on an administrative database (Snds) used for reimbursement. Analyses of Snds data by Cnam were performed with the permission of the CNIL (French data protection authority) and by decree.
: The authors declare that they have no competing interest.
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