Cross-sectional investigation on rickets of 150 preschoolers and analysis of the relation between 25(OH)D 3 level and X-ray
QU Jian-ping, YANG Shu-fen, YANG Tao, REN Li-hong, YAO Li, TIAN Zhi-liang, WANG Wei, ZHANG Xue-lian
journal1 . 2011, (8): 734 -736 .