RT Journal Article SR Electronic T1 Books and Monographs JF Journal of Medical Genetics JO J Med Genet FD BMJ Publishing Group Ltd SP 363 OP 364 DO 10.1136/jmg.5.4.363-a VO 5 IS 4 A1 Arnold Sorsby YR 1968 UL http://jmg.bmj.com/content/5/4/363.2.abstract AB