求翻译：统计2004年3月至2009年4月共计10630例孕妇接受胎儿畸形产前超声检查资料，对其中712例高龄孕妇（预产期年龄≥35周岁）实施系统产前超声筛查，并随访所有高龄孕妇妊娠结局，胎儿畸形以产后最终诊断为标准，同时以低龄孕妇筛查作为对照组进行比较，评估产前超声诊断的价值。是什么意思？

Statistics from March 2004 to April 2009 a total of 10,630 cases of pregnant women receiving prenatal ultrasound examination of fetal malformation data, of which 712 cases of advanced maternal age (expected date of birth aged ≥ 35 years) to implement the system of prenatal ultrasound screening and f

Statistics from March 2004 to April 2009, totalling 10,630 pregnant women receive under deformed fetus antenatal ultrasound screening among pregnant women aged 712 laws (expected date of childbirth age ≥ 35 years old) Implementation of the system, and pre-natal ultrasound screening for pregnant wome

Counts from March, 2004 the total 10630 example pregnant women to accept the embryo abnormal pre-natal supersonic inspection material to April, 2009, (expected date of childbirth age ≥35 full year old) implements the system to 712 example advanced age pregnant woman pre-natal supersonic to sieve loo

Statistics between March 2004 and a total of 10,630 patients women received prenatal ultrasonography of fetal malformations data, of which 712 cases of pregnant women in old age (baby age ≥ 35 years) implementation of the system of prenatal ultrasound screening, pregnancy outcome and follow-up of al

Counts from March, 2004 the total 10630 example pregnant women to accept the embryo abnormal pre-natal supersonic inspection material to April, 2009, (expected date of childbirth age ≥35 full year old) implements the system to 712 example advanced age pregnant woman pre-natal supersonic to sieve loo