tandem mass spectrometry 新生儿筛检 (en) LC-MS/MS Tandem mass spectrometry tandem mass spectrometry tandem mass spectrometry mass spec. data http://en.wikipedia.org/wiki/Tandem_mass_spectrometry tandem mass spec тандемную tandem mass spectrometry Tandem mass spectrometry (MS-MS) MS/MS MS/MS several stages Tandem mass spectrometry English LC-MS/MS (en) https://en.wikipedia.org/wiki/Tandem_mass_spectrometry Tandem mass spec MS/MS tandem mass spectrometry MS/MS tandem mass spectometry Tandem mass spectrometry MS/MS tandem mass spectrometry tandem MS tandem mass spectrometry tandem mass spectrometry LC-MS/MS LC-MS/MS