Cheng YongfenThe Children Hospital. ANALYSIS OF 212 CASES OF DOWN SYNDROME. [J]. Journal of Chongqing Medical University (3):204-205(1993) DOI: 10.13406/j.cnki.cyxb.1993.03.011.
Two hundred and twelve rases of Down syndrotae were diagnosed in our hospital among the families for genetic consultation from 1985 to 1592. The chromosome pattern was analysed in all cases.91.5%