Association of serum vitamin D level with severity and treatment in children with Henoch-Schönlein purpura
FAN Li, LIU Heng, WANG Yu-Chuan, CHEN Li, ZHOU Jing-Jing, CUI Yu-Xia
CJCP . 2017, (7): 796 -799 .  DOI: 10.7499/j.issn.1008-8830.2017.07.013