| http://www.w3.org/ns/prov#value | - PMID 24356462 451 To establish the relationship between the first-trimester screening markers [pregnancy-associated plasma protein A ( PAPP-A ) , free human chorionic gonadotrophin-beta ( beta-hCG ) , nuchal translucency ( NT ) ] , the Down syndrome ( DS ) risk estimate , and the adverse outcomes such as low birth weight , small for gestational age ( SGA ) and pre-term delivery .
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