DOI:
10.1055/s-00000020
Geburtshilfe und Frauenheilkunde
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References
Norman RJ, Menabawey M, Lowings C et al.
Relationship between blood and urinary concentrations of intact human chorionic gonadotropin and its free subunits in early pregnancy.
Obstet Gynecol 1987;
69: 590-593
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