RT Journal Article SR Electronic T1 Medical genetics: advances in brief JF Journal of Medical Genetics JO J Med Genet FD BMJ Publishing Group Ltd SP 657 OP 657 DO 10.1136/jmg.31.8.657-b VO 31 IS 8 A1 Barber, John C K YR 1994 UL http://jmg.bmj.com/content/31/8/657.3.abstract AB