Second trimester maternal serum screening test in China
Second trimester maternal serum screening test in China
Second trimester maternal serum screening test in China
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Fig 2. the median of free β-HCG<br />
35.00<br />
PE-<strong>in</strong>ner<br />
PUMCH<br />
30.00<br />
25.00<br />
median<br />
20.00<br />
15.00<br />
10.00<br />
5.00<br />
14w 15w 16w 17w 18w 19w 20w<br />
Gestational Weeks
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