Studies on the pattern of circulating steroids in the normal menstrual cycle. I. Simultaneous assays of progesterone, pregnenolone, dehydroepiandrosterone, testosterone, dihydrotestosterone, androstenedione, oestradiol and oestrone 1 - Guerrero,R.; Aso,T.; Brenner,P.F. (Acta Endocrinol (Copenh), 1976)