Affiliation: | 1. Centre Hospitalier Universitaire La Cavale Blanche, Brest, France;2. Ospedale Pediatrico Bambino Gesù, Rome, Italy;3. Hospital Ramon y Cajal, Madrid, Spain;4. Pediatric Rheumatology Research Institute, Bad Bramstedt, Germany;5. Sapienza Università di Roma, Rome, Italy;6. Ambroise Paré Hospital and Versailles Saint Quentin en Yvelines University, Paris, France |