Keyphrases
Biological Variation
100%
Combined Test
10%
Correlation Coefficient
20%
Group-based
10%
High Correlation
10%
Human Chorionic Gonadotropin
90%
Long Interval
10%
Maternal Plasma
10%
Nuchal Translucency
10%
Nuchal Translucency Thickness
10%
Number of Days
10%
Plasma Concentration
20%
Pregnancy Trimester
100%
Pregnancy-associated Plasma protein-A (PAPP-A)
100%
Retesting
10%
Risk Estimation
10%
Trisomy 21
10%
Ultrasound Measurements
10%
Biochemistry, Genetics and Molecular Biology
Biological Variation
100%
Blood Level
20%
First Trimester Pregnancy
100%
Human Chorionic Gonadotropin
100%
Pregnancy-Associated Plasma Protein A
100%
Trisomy 21
10%
Immunology and Microbiology
Biological Variation
100%
Blood Level
25%
Blood Plasma
100%
First Trimester Pregnancy
100%
Maternal Plasma
12%
Agricultural and Biological Sciences
Chorionic Gonadotropin
100%
Pregnancy-Associated Plasma Protein A
100%
Medicine and Dentistry
Biological Variation
100%