TY - JOUR T1 - Genetics JF - Journal of Medical Genetics JO - J Med Genet SP - 350 LP - 350 DO - 10.1136/jmg.30.4.350 VL - 30 IS - 4 AU - Richard Trembath Y1 - 1993/04/01 UR - http://jmg.bmj.com/content/30/4/350.1.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -