De Klerk, M. Weideman, A. Malan, C. Shanley, B. C.
(Health and Medical Publishing Group (HMPG), 1975)
The relationship between urinary excretion of porphyrins, porphyrin precursors and total oestrogens in normal pregnancy was investigated. Significant increases in total oestrogen, delta aminolaevulinic acid (ALA) and ...