Laurens, Johannes B.2013-09-072008-08-112013-09-072008-04-2320072008-08-05a 2007E960/aghttp://hdl.handle.net/2263/27035Dissertation (MSc)--University of Pretoria, 2007.Please read the abstract in the section front of this document© University of Pretoria 2007E960 /Gas chromatography-mass spectrometry13c-urea breath testGc-ms13c-ubtHelicobacter pylori (h. pylori)UCTDDiagnosis of helicobacter pylori infection with the 13C-urea breath test : analysis by means of gas chromatography with mass selective detectionDissertationhttp://upetd.up.ac.za/thesis/available/etd-08052008-081439/