1. Students' Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran;
2. Department of Pathology, Tehran University of Medical Sciences, Tehran, Iran;
3. Children's Medical Center, Pediatrics Center of Excellence, Tehran, Iran;
4. Department of Pediatrics, Tehran University of Medical Sciences, Tehran, Iran;
5. Pediatric Rheumatology Research Group, Rheumatology Research Center, Tehran University of Medical Sciences, Tehran, Iran