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25. Intervillous circulation in the first trimester: the phantom of the color Doppler obstetric opera. Jauniaux E Ultrasound Obstet Gynecol; 1996 Aug; 8(2):73-6. PubMed ID: 8883306 [No Abstract] [Full Text] [Related]
26. Parameters and standardization in obstetric Doppler. Gill RW Echocardiography; 1990 Sep; 7(5):573-81. PubMed ID: 10149238 [TBL] [Abstract][Full Text] [Related]