RT Journal Article SR Electronic T1 A statistical study of half-sibships born to parents affected with Huntington's disease. JF Journal of Medical Genetics JO J Med Genet FD BMJ Publishing Group Ltd SP 17 OP 22 DO 10.1136/jmg.9.1.17 VO 9 IS 1 A1 Brackenridge, C J YR 1972 UL http://jmg.bmj.com/content/9/1/17.abstract AB