Breath hydrogen (H2) and methane (CH4) excretion patterns in normal man and in clinical practice.
D000328:Adult; D004032:Diet; D005215:Fasting; D005260:Female; D006801:Humans; D006859:Hydrogen; D008297:Male; D008697:Methane; D008875:Middle Aged; D012016:Reference Values; D012119:Respiration
D006859:Hydrogen; D008697:Methane