計劃生育的夫妻請先了解認識--唐氏综合症
http://www.a-hospital.com/w/%E5%94%90%E6%B0%8F%E7%BB%BC%E5%90%88%E5%BE%81
http://www.baike.com/wiki/%E5%B0%8F%E5%84%BF%E5%94%90%E6%B0%8F%E7%BB%BC%E5%90%88%E5%BE%81
http://baike.baidu.com/item/%E5%94%90%E6%B0%8F%E7%AD%9B%E6%9F%A5?sefr=enterbtn
http://www.baike.com/wiki/%E5%94%90%E6%B0%8F%E7%BB%BC%E5%90%88%E5%BE%81
http://www.biodiscover.com/news/hot/research/102761.html
