Reference
- Heilmeyer , Ludwig . 1943 . Spectrophotometry in Medicine. Germany, 1932 , Edited by: Jordon , A. and Tippell , T. L. London : Adam Hilger, Ltd. .
- Watson , C. J. and Larson , E. A. 1947 . The Urinary Coproporphyrins in Health and Disease . Physiol. Rev. , 27 : 3
- De Langer , C. D. and Ten Berg , J. A. G. 1948 . Porphyrin in the Urine as a First Symptom of Lead Poisoning . Acta Medical Scandinovic. , Vol. 130 fase I
- Johnson , W. S. and Whitman , N. E. 1950 . Coproporphyrinuria as an Index of Lead Absorption . Arch. Indust. Hyg. & Occup. Med. , 2 August : 173
- Maloof , C. C. 1850 . Role of Coproporphyrin in Occupational Diseases. Significance of Coproporphyrin in Lead Workers . Arch. Indust. Hyg. & Occup. Med. , 1 March : 296
- Harrold , G. C. 1948 . Urinary Porphyrins in Lead Poisoning . Proceedings of the Lead Hygiene Conference , 129
- Brooks , A. L. 1951 . An Appraisal of a Urinary Porphyrin Test in Detection of Lead Absorption . Ind. Med. & Surger. , 20 : 390 – 392 . 9