Efficacy and safety of vitamin D as adjuvant therapy for childhood pneumonia: a Meta analysis
MU Shi-Yin, ZOU Ying-Xue, ZHAI Jia, YAO Guo-Hua
CJCP . 2020, (2): 124 -129 .  DOI: 10.7499/j.issn.1008-8830.2020.02.008