American Journal of Obstetrics and Gynecology · 1973 · 34 citations · 6 references
Life SciencesBiochemistryObstetricsEmbryologyMaternal-fetal MedicinePrenatal DiagnosisAmniotic Fluid AssessmentFetal AssessmentFetal MaturationFetal PhysiologyMaternal-fetal PhysiologyPrenatal DevelopmentFetal Lung DevelopmentFetal Lung Maturity AssessmentFetal Lung Maturity TestingFetal Maturity AssessmentFetal Pulmonary Development
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