- Correspondence to Dr Marie Kostine, Rheumatology Department, Centre Hospitalier Universitaire de Bordeaux, Hôpital Pellegrin, Place Amélie Raba Léon, Bordeaux 33000, France;
- Received 20 September 2017
- Revised 31 October 2017
- Accepted 4 November 2017
- Published online 16 November 2017.
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