title: Methane and colorectal cancer.
mesh_terms: D000328:Adult; D000368:Aged; D001944:Breath Tests; D003110:Colonic Neoplasms / Q000378:metabolism*; D005260:Female; D006801:Humans; D008297:Male; D008697:Methane / Q000032:analysis*; D008875:Middle Aged; D012004:Rectal Neoplasms / Q000378:metabolism*
chemical_list: D008697:Methane