![](/img/cover-not-exists.png)
Maternal serum β-hCG levels in screening for Down syndrome are higher in singleton pregnancies achieved with ovulation induction and intrauterine insemination than in spontaneous singleton pregnancies
Raija Räty, Ulla Ekblad, Leena Anttila, Arja Virtanen, Pertti Koskinen, Päivi Laitinen, Aila TiitinenVolume:
76
Year:
2001
Language:
english
DOI:
10.1016/s0015-0282(01)02831-x
File:
PDF, 42 KB
english, 2001