RT Journal Article SR Electronic T1 Clinical genetics JF Journal of Medical Genetics JO J Med Genet FD BMJ Publishing Group Ltd SP S26 OP S35 DO 10.1136/jmg.33.Suppl_1.S26 VO 33 IS Suppl 1 YR 1996 UL http://jmg.bmj.com/content/33/Suppl_1/S26.abstract AB