Sadat Hejazi-Shishavan, F. .; Farshbaf-Khalili, A. .; Mahdipour, M. .; Abbasalizadeh, F. .; Shahnazi, M. . 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 . Adv Nurs Midwifery 2022, 31, 32-38.