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P11.16: Median levels of free beta‐hCG and PAPP‐A in the first trimester screening for Down syndrome in a Brazilian population from a private center in Rio de Janeiro
Author(s) -
Lopes L. M.,
Peixoto F. F.,
Sa R. M.,
Fonseca A. A.,
Neto E. V.
Publication year - 2009
Publication title -
ultrasound in obstetrics and gynecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.202
H-Index - 141
eISSN - 1469-0705
pISSN - 0960-7692
DOI - 10.1002/uog.7166
Subject(s) - medicine , population , first trimester , down syndrome , obstetrics , second trimester , fetus , prenatal screening , center (category theory) , gynecology , prenatal diagnosis , pregnancy , biology , genetics , environmental health , chemistry , crystallography , psychiatry