For patients with amenorrhea,chronic anovulation due to polycystic ovary syndrome(PCOS) but with fertility requirements,the primary task is to regulate the menstrual function for promoting pregnancy.Professor You Zhao-ling has created hypothetical menstruation ovulation-assisted pregnancy,which does not purposely pursue menstrual onset.It is scheduled for menstrual period for the fifth day on the day of treatment,and ovulation drugs are used after 9 o'clock in the evening on the day of treatment.The common...