1. Asklepios Medical School, ACH, Hamburg, Germany
2. Hamburg Centre for Pediatric and Adolescent Rheumatology, Schön Klinik Hamburg Eilbek, Hamburg, Germany
3. Yale School of Medicine, New Haven, CT, USA
4. German Rheumatism Research Centre, Charité—Universitaetsmedizin Berlin, Berlin, Germany
5. Department of Pediatric Facial Plastic Surgery and Craniofacial Anomalies, Catholic Children’s Hospital Wilhelmstift, Hamburg, Germany