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Article History

Received: 9 December 2017

Accepted: 6 March 2018

First Online: 12 December 2018

Authors’ information

: PC was involved in the treatment of hepatitis B, C, and D since the end of the 1970s and of HIV infections since the beginning of the AIDS epidemic. He was the co-founder of a healthcare network for DUs in Lyon in 1993 and participated in the creation of the National Healthcare Network in 1997 of which he has been President until 2003.

: This study was approved by the French Commission Nationale de l’Informatique et des Libertés (CNIL). The database was anonymized.Apart from the three initial seeds to whom the study was presented by FD, all the other respondents were recruited by peers who explained the setting of the study. They decided voluntarily to be included in the study even before getting in touch with FD. All recruited DUs gave an informed consent to participate and to publication.

: The authors declare that they have no competing interests (FDs’ salary was paid by the grant).

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