- Correspondence to Professor Patrice Cacoub, Department of Internal Medicine and Clinical Immunology, AP-HP, Hôpital La Pitié-Salpêtrière, F-75013, Paris, France;
- Received February 9, 2018
- Revised March 15, 2018
- Accepted April 5, 2018
- First published April 27, 2018.
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