| http://www.w3.org/ns/prov#value | - PMID 24192489 169 The objective of this study is to determine whether there is an association between the maternal serum concentration of PAPP-A and free beta-hCG at 11-13 ( +6 ) weeks with the uterine artery pulsatility index ( PI ) at 22-24 weeks , and secondly , to compare the screening characteristics of the two methods in the prediction of adverse pregnancy outcome .
|
