Theriogenology · 1993 · 88 citations · 22 references
MedicineObstetricsObstetric UltrasoundUltrasonographyUltrasoundEarly Pregnancy AssessmentEarly Pregnancy Viability AssessmentObstetric UltrasonographyPregnancy DiagnosisUterine UltrasonographyEarly Intrauterine Pregnancy DiagnosisEarly Pregnancy Loss DiagnosisPregnancy Ultrasonography
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