PT - JOURNAL ARTICLE AU - Sanger, R AU - Tippett, P AU - Gavin, J AU - Teesdale, P AU - Daniels, G L TI - Xg groups and sex chromosome abnormalities in people of northern European ancestry: an addendum. AID - 10.1136/jmg.14.3.210 DP - 1977 Jun 01 TA - Journal of Medical Genetics PG - 210--211 VI - 14 IP - 3 4099 - http://jmg.bmj.com/content/14/3/210.short 4100 - http://jmg.bmj.com/content/14/3/210.full SO - J Med Genet1977 Jun 01; 14