Nejadi, Naser, et al. “Vitamin D Binding Protein As Screening Biomarker Candidate for Late-Onset Preeclampsia Without Intrauterine Growth Restriction During 16 Week of Gestation”. Archives of Advances in Biosciences, vol. 6, no. 1, Feb. 2015, doi:10.22037/jps.v6i1.8182.