pulsatile intravenous gonadotropin releasing hormone ( iv-gnrh ) was used in 36 infertile patients with primary amenorrhea ( n = 5 ) , secondary amenorrhea due to hypothalamic chronic anovulation ( hca ) ( n = 22 ) , hyperprolactinemia ( n = 1 ) or polycystic ovary syndrome ( pcos ) ( n = 5 ) , and oligomenorrhea ( n = 3 ) , using several dosage and timing regimens .
C0023610
gonadotropin releasing hormone
C0020663
hypothalamic