関連ワード:
what percent of population has o negative blood type what percentage of population has o positive blood type what percentage of the population has o negative blood type what percentage of people have o negative blood type what percent of people have o negative blood type what percentage of the population is o negative blood type percent of population with o positive blood type what percent of the population has type o positive blood percentage of people with o positive blood type what percentage of the population has type o blood
