TY - JOUR T1 - Down's syndrome with an unusual karyotype. JF - Journal of Medical Genetics JO - J Med Genet SP - 211 LP - 214 DO - 10.1136/jmg.5.3.211 VL - 5 IS - 3 AU - M E Walker Y1 - 1968/09/01 UR - http://jmg.bmj.com/content/5/3/211.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -