RT Journal Article SR Electronic T1 The Distribution of the Blood Groups in the United Kingdom JF Journal of Medical Genetics JO J Med Genet FD BMJ Publishing Group Ltd SP 546 OP 547 DO 10.1136/jmg.8.4.546-a VO 8 IS 4 A1 R. B. McConnell YR 1971 UL http://jmg.bmj.com/content/8/4/546.2.abstract AB