TY - GEN AU - Sancken,U AU - Bahner,D TI - Comparison of triple-risk assessment of fetal trisomy 21 including total human choriogonadotropin (hCG) or its free beta-subunit (free beta hCG) SN - 1015-3837 PY - 2003///0902 KW - Adult KW - Chorionic Gonadotropin KW - blood KW - Chorionic Gonadotropin, beta Subunit, Human KW - Confidence Intervals KW - Down Syndrome KW - Female KW - Fetal Diseases KW - Humans KW - Multivariate Analysis KW - Pregnancy KW - Prenatal Diagnosis KW - methods KW - Retrospective Studies KW - Risk Assessment N1 - Publication Type: Comparative Study; Journal Article UR - https://doi.org/10.1159/000068073 ER -