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The circadian rhythm in the urinary excretion of etiocholanolone, of androsterone and of dehydroepiandrosterone in normal menstruating women was studied. The excretion patterns of etiocholanolone and androsterone seem to be nearly synchronous, but not equal, thus resulting in a diurnal variation.

Some Aspects of the Circadian Rhythm of the Urinary Excretion of Etiocholanolone, Androsterone and Dehydroepiandrosterone