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4. Indication-specific accuracy of second-trimester genetic ultrasonography for the detection of trisomy 21. Vintzileos AM; Guzman ER; Smulian JC; Day-Salvatore DL; Knuppel RA Am J Obstet Gynecol; 1999 Nov; 181(5 Pt 1):1045-8. PubMed ID: 10561615 [TBL] [Abstract][Full Text] [Related]
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9. Is fetal hyperechoic bowel on second-trimester sonogram an indication for amniocentesis? Bromley B; Doubilet P; Frigoletto FD; Krauss C; Estroff JA; Benacerraf BR Obstet Gynecol; 1994 May; 83(5 Pt 1):647-51. PubMed ID: 8164918 [TBL] [Abstract][Full Text] [Related]
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12. Fetal body ratios in second trimester: a useful tool for identifying chromosomal abnormalities? Hadlock FP; Harrist RB; Martinez-Poyer J J Ultrasound Med; 1992 Feb; 11(2):81-5. PubMed ID: 1560498 [TBL] [Abstract][Full Text] [Related]
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