Hydrogen/Expired gas^post 10 g lactulose PO:VFr:Pt:Exhl gas:Qn
hydrogen/expired gas^post 10 g lactulose po:vfr:pt:exhl gas:qn
Hydrogen/Expired gas^post 10 g lactulose PO:VFr:Pt:Exhl gas:Qn
hydrogen/expired gas^post 10 g lactulose po:vfr:pt:exhl gas:qn