title: [Fecal porphyrin analyses in patients with porphyria cutanea tarda].
mesh_terms: D000328:Adult; D000368:Aged; D004912:Erythrocytes / Q000032:analysis; D005243:Feces / Q000032:analysis*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011164:Porphyrias / Q000378:metabolism*; D011166:Porphyrins / Q000032:analysis* / Q000652:urine; D012871:Skin Diseases / Q000378:metabolism*
chemical_list: D011166:Porphyrins