PT - JOURNAL ARTICLE AU - M E Walker TI - Down's syndrome with an unusual karyotype. AID - 10.1136/jmg.5.3.211 DP - 1968 Sep 01 TA - Journal of Medical Genetics PG - 211--214 VI - 5 IP - 3 4099 - http://jmg.bmj.com/content/5/3/211.short 4100 - http://jmg.bmj.com/content/5/3/211.full SO - J Med Genet1968 Sep 01; 5