%0 Journal Article %T Correlation of Fetal DNA and Human Chorionic Gonadotropin Concentrations in Second-Trimester Maternal Serum %A Ohashi,, Yoko %A Miharu,, Norio %A Honda,, Hiroshi %A Samura,, Osamu %A Ohama,, Koso %J Clinical Chemistry %V 48 %N 2 %@ 0009-9147 %D 2002-02-01 %I Oxford Academic %~ DeepDyve