[1] University of Groningen,Department of Rheumatology and Clinical Immunology
[2] University Medical Centre Groningen,Deptartment of Internal Medicine, division Vascular Medicine
[3] University of Groningen,Department of Pediatric Rheumatology and Immunology
[4] University Medical Centre Groningen,undefined
[5] Beatrix Children’s Hospital,undefined
[6] University of Groningen,undefined
[7] University Medical Centre Groningen,undefined