RT Journal Article SR Electronic T1 Very low penetrance in 85 Japanese families with facioscapulohumeral muscular dystrophy 1A JF Journal of Medical Genetics JO J Med Genet FD BMJ Publishing Group Ltd SP e12 OP e12 DO 10.1136/jmg.2003.008755 VO 41 IS 1 A1 K Goto A1 I Nishino A1 Y K Hayashi YR 2004 UL http://jmg.bmj.com/content/41/1/e12.abstract AB