17 febrero 2015
Millions of African-Americans left the rural South during the 20th century in search of greater opportunities for work, education and overall quality of life in the urban North, Midwest and West. But the gains many made were clouded by an increased mortality rate, likely the result of unhealthy habits picked up by vices common in the big city, finds a new study.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/TKmQog2fOCI/150217131242.htm
