1 Department of Nephrology, Rheumatology and Immunology, Fujian Children's Hospital, College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, 966 Heng Yu Road, Jin'an District, Fuzhou, 350014, Fujian, People's Republic of China.
2 Department of Nephrology, Rheumatology and Immunology, Fujian Children's Hospital, College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, 966 Heng Yu Road, Jin'an District, Fuzhou, 350014, Fujian, People's Republic of China. zihua_yu@126.com.