title: Breath hydrogen during sleep.
mesh_terms: D001944:Breath Tests; D002675:Child, Preschool; D003903:Deuterium / Q000032:analysis*; D006801:Humans; D007792:Lactulose; D012119:Respiration; D012890:Sleep; D013997:Time Factors
chemical_list: D007792:Lactulose; D003903:Deuterium