Hydrogen+Methane/Expired gas^2.5H post dose lactose PO:VFr:Pt:Exhl gas:Qn
hydrogen+methane/expired gas^2.5h post dose lactose po:vfr:pt:exhl gas:qn
Breath H2+methane 2.5h p Lac PO
breath h2+methane 2.5h p lac po