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Identification of response bias on apparent pregnancy outcome after second trimester ultrasound |
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| Authors: | Peter Kozlowski Ruediger Stressig Ruediger Hammer Hans Joerg Siegmann Susanne Froehlich Pablo Emilio Verde Alexander Johannes Knippel |
| Institution: | 1. Praenatal.de - Prenatal Medicine and Genetics, Duesseldorf/Cologne, Germany;2. Coordination Centre for Clinical Trials, Heinrich-Heine University, Duesseldorf, Germany |
| Abstract: | |
| Keywords: | fetal ultrasound response bias congenital anomalies detection rate |