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Continue to ChatMaternal and fetal plasma endothelin levels in intrauterine growth restriction: relation to umbilical artery Doppler flow velocimetry - https://avesis.gazi.edu.tr/yayin/8a1efd26-f08b-49fc-bf19-c0f81a529215/maternal-and-fetal-plasma-endothelin-levels-in-intrauterine-growth-restriction-relation-to-umbilical-artery-doppler-flow-velocimetry