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Improved diagnostic accuracy by using secondary ultrasound markers in the first-trimester screening for trisomies 21, 18 and 13 and Turner syndrome |
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| Authors: | Natasa Karadzov-Orlic Amira Egic Zagorka Milovanovic Maja Marinkovic Barbara Damnjanovic-Pazin Relja Lukic Ivana Joksic Aleksandar Curkovic Zeljko Mikovic |
| Institution: | Obstetric/Gynecology Clinic ‘Narodni Front’, University of Belgrade, Belgrade, Serbia |
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