RT Journal Article SR Electronic T1 The ABO Blood Groups: Comprehensive Tables and Maps of World Distribution JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 91 OP 91 DO 10.1136/jcp.13.1.91-b VO 13 IS 1 A1 Barbara Dodds YR 1960 UL http://jcp.bmj.com/content/13/1/91.2.abstract AB