TY - JOUR T1 - Textbook of Human Genetics JF - Journal of Medical Genetics JO - J Med Genet SP - 351 LP - 351 DO - 10.1136/jmg.26.5.351 VL - 26 IS - 5 AU - Andrew P Read Y1 - 1989/05/01 UR - http://jmg.bmj.com/content/26/5/351.1.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -