control of the treatment cycles was performed by basal body temperature , pregnanediol serial estimations , endometrial biopsies and in addition in 5 treatment cycles by radio-immunological assay of estradiol-17 beta ( oe2 ) , progesterone , lh and fsh from the serum at intervals of 1 to 3 days .
C0033004
pregnanediol
C0033308
progesterone