Prevalence of porphyria cutanea tarda in Johannesburg negroes.
D000328:Adult; D001741:Black or African American; D044383:Black People; D003306:Coproporphyrins / Q000652:urine; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011164:Porphyrias / Q000453:epidemiology* / Q000209:etiology / Q000652:urine; D012737:Sex Factors; D013019:South Africa; D014578:Uroporphyrins / Q000652:urine
D003306:Coproporphyrins; D014578:Uroporphyrins