早产儿出生时维生素D水平及影响因素分析
余仁强, 赵馨, 陈道桢, 廖祥鹏, 周勤
Vitamin D level at birth and influencing factors in preterm infants
YU Ren-Qiang, ZHAO Xin, CHEN Dao-Zhen, LIAO Xiang-Peng, ZHOU Qin
中国当代儿科杂志 . 2017, (7): 800 -805 .  DOI: 10.7499/j.issn.1008-8830.2017.07.014