ovarian volumes , measured with ultrasound , and serum estradiol and progesterone concentrations were studied during gonadotropin treatment cycles 1 week after hcg administration in 23 patients , of whom nine had polycystic ovarian syndrome ( pco ) , eight oligomenorrhea or amenorrhea corresponding to who group ii ( omg ) , and six hypogonadotropic amenorrhea corresponding to who group i ( hgt ) .
C0033308
progesterone
C0002453
amenorrhea