- Correspondence to Professor Pascal Richette, Rheumatology Department, Hôpital Lariboisière, Assistance Publique-Hôpitaux de Paris, Inserm U1132, UFR de Médecine, Université Paris Diderot, Paris 75013, France;
- Received 2 November 2017
- Accepted 4 November 2017
- Published online 13 November 2017.
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