Relationship between serum 25(OH)D levels at birth and respiratory distress syndrome in preterm infants
YU Ren-Qiang, CHEN Dao-Zhen, HAO Xiao-Qing, JIANG Shi-Hong, FANG Guang-Dong, ZHOU Qin
CJCP . 2017, (11): 1134 -1137 .  DOI: 10.7499/j.issn.1008-8830.2017.11.002