Hydrogen/Expired gas^post 50 g lactose PO:VFr:Pt:Exhl gas:Qn
hydrogen/expired gas^post 50 g lactose po:vfr:pt:exhl gas:qn
Hydrogen/Expired gas post 50 g lactose PO (Exhl gas) [Volume fraction]
hydrogen/expired gas post 50 g lactose po (exhl gas) [volume fraction]