関連ワード:
what ethnicity has the most o negative blood type what nationality has the most o negative blood type what race has the most o negative blood type what ethnicity has the most o positive blood type what nationality has the most o positive blood type what ethnic group has the most o negative blood type what race has more o negative blood type what country has the most o negative blood type what population has the most o negative blood type who has the most o negative blood type
