Sadat Hejazi-Shishavan, F. et al. 2022. The Relationship between Serum Bimarkers with the Results of Down Syndrome Screening and Fetal Karyotype in High Risk Pregnant Women: Relationship Some serum biochemical markers with the results of first trimester Down syndrome screening . Advances in Nursing & Midwifery. 31, 3 (Jul. 2022), 32–38. DOI:https://doi.org/10.22037/anm.v31i3.39828.