1. First Department of Pediatrics, Semmelweis University , Budapest , Hungary
2. Department of Laboratory Medicine, Semmelweis University , Budapest , Hungary
3. Department of Rheumatology, Albert Szent-Györgyi Health Center, University of Szeged , Szeged , Hungary
4. Department of Internal Medicine , Csolnoky Hospital , Hungary
5. Research Group of Pediatrics and Nephrology, Hungarian Academy of Sciences , Budapest , Hungary