Centers for Disease Control and Prevention says the average American man has a heart that’s 7.8 years “older” than his chronological age;
這標準如何製定?和什麽比較?已經是“average American man”了,難道對比的是“average world man”?
Centers for Disease Control and Prevention says the average American man has a heart that’s 7.8 years “older” than his chronological age;
這標準如何製定?和什麽比較?已經是“average American man”了,難道對比的是“average world man”?