%0 Journal Article %T 早产儿出生时维生素D水平及影响因素分析<br>Vitamin D level at birth and influencing factors in preterm infants %A 余仁强 %A 赵馨 %A 陈道桢 %A 廖祥鹏 %A 周勤< %A br> %A YU Ren-Qiang %A ZHAO Xin %A CHEN Dao-Zhen %A LIAO Xiang-Peng %A ZHOU Qin %J 中国当代儿科杂志 %D 2017 %R 10.7499/j.issn.1008-8830.2017.07.014 %K 25-羟基维生素D %K 维生素D缺乏 %K 早产儿 %K < %K br> %K 25-Hydroxyvitamin D %K Vitamin D defciency %K Preterm infant %U http://www.zgddek.com/CN/abstract/abstract14311.shtml