Quantification of the nonpolar amino acids in amniotic fluid of congenital malformation by gas chromatography mass spectrometry (GC-MS) derivatization method

Quantification of the nonpolar amino acids in amniotic fluid of congenital malformation by gas chromatography mass spectrometry (GC-MS) derivatization method Basic & Clinical Medicine . 2017, (7): 1004 -1009 .