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2. Porphyrias;Kitchen,1979
3. The occurrence of congenital porphyrinuria (pink tooth) in cattle in South Africa (Swaziland);Fourie;Onderstepoort J Vet Sci Anim Ind,1936
4. Some cases of congenital porphyrinurias in cattle;Rimington;Onderstepoort J Vet Sci Anim Ind,1936
5. Congenital porphyria in bovines;Amoroso;Nature,1957