1. Variegate porphyria (mixed porphyria);Baxter;Archs Dermat.,1967
2. Oral contraceptives in Porphyria Variegata;Dean;S.Afr. Med. J.,1965
3. Discussion of Rimington's Patterns of porphyrin excretion and their interpretation;Eales;S. Afr. J. Lab. clin. Med.,1963
4. Porphyria variegata provoked by contraceptive pill;Fowler;Br. Med. J.,1975
5. Sunlight photosensitivity testing;Gordon,1964