SERUM MARKERS FOR DOWN'S SYNDROME IN RELATION TO NUMBER OF PREVIOUS BIRTHS AND MATERNAL AGE
1996 ◽
Vol 16
(8)
◽
pp. 699-703
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1994 ◽
Vol 255
(2)
◽
pp. 57-64
◽
Keyword(s):
1987 ◽
Vol 24
(9)
◽
pp. 725-731
◽
Keyword(s):
1985 ◽
pp. 221-222
◽
2019 ◽
Vol 70
(1)
◽
pp. 12-17
1966 ◽
Vol 29
(3)
◽
pp. 271-276
◽
Keyword(s):