the patients were assigned to group 1 ( amenorrhea , low fsh and lh , and no evidence of endogenous estrogens , as indicated by lack of withdrawal bleeding after medroxyprogesterone acetate ) or group 2 ( amenorrhea , with normal gonadotropins and evidence of endogenous estrogens by progestin withdrawal bleeding ) .
C0065864
medroxyprogesterone acetate
C0002453
amenorrhea