Serum free β‐human chorionic gonadotropin in the three trimesters of pregnancy: effects of maternal characteristics and medical history
Publisher: John Wiley & Sons Inc
E-ISSN: 1469-0705|46|1|51-59
ISSN: 0960-7692
Source: ULTRASOUND IN OBSTETRICS & GYNECOLOGY, Vol.46, Iss.1, 2015-07, pp. : 51-59
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Abstract