RT Journal Article SR Electronic T1 Molecular Genetics JF Journal of Medical Genetics JO J Med Genet FD BMJ Publishing Group Ltd SP 216 OP 216 DO 10.1136/jmg.27.3.216 VO 27 IS 3 A1 Padua, R A YR 1990 UL http://jmg.bmj.com/content/27/3/216.abstract AB