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MedicineGynecologyObstetricsPrenatal DiagnosisReproductive EndocrinologyReproductive MedicineEarly Pregnancy AssessmentFirst-trimester UltrasoundGynecologic EndocrinologyPregnancyPregnancy DiagnosisPregnancy EndocrinologyEarly Pregnancy Loss DiagnosisEarly Pregnancy ScreeningFirst-trimester Pregnancy AssessmentFirst-trimester Prenatal DiagnosisSerial Human Chorionic Gonadotropin Measurements
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Judith L. Vaitukaitis, Glenn D. Braunstein, Griff T. Ross · American Journal of Obstetrics and Gynecology · 1972 · 891 citations
Methods in investigative and diagnostic endocrinology
Albert Segaloff · Steroids · 1975 · 197 citations
Corpus Luteum Function in Early Pregnancy
Tatsuya Yoshimi, Charles A. Strott, J. R. Marshall et al. · The Journal of Clinical Endocrinology & Metabolism · 1969 · 173 citations
Medicine, Endocrinology, Gynecology +17