1. Bailey, E.: The estimation of unconjugated cortisol metabolites in urine by gas chromatography. In: Gas chromatography of steroids in biological fluids (M. B. Lipsett, ed.). New York: Plenum Press 1965.
2. Berliner, D. L., andT. F. Dougherty: Hepatic and extra hepatic regulation of corticosteroids. Pharmakol. Rev.13, 329 (1961).
3. Bliss, E. L., A. A. Sandberg, D. H. Nelson, andK. Eik-Nes: The normal levels of 17-hydroxycorticosteroids in the peripheral blood of man. J. clin. Invest.32, 818 (1953).
4. Brown, H., D. G. Willardson, L. T. Samnels, andF. H. Tyler: 17-Hydroxycorticosteroid metabolism in liver disease. J. clin. Invest.33, 1524 (1954).
5. Ceresa, F.: Ring A and side-chain reduction processes in cortisol metabolism. In: Homonal steroids, vol. I (L. Martini andA. Pecile, ed.), p. 99. New York: Academic Press 1964.