CNN's Jason Carroll talks with Dr. Ron Walls of Brigham and Women's Hospital about the patients in his care, including two in critical condition, who were wounded in the Boston Marathon bombings. Walls says the worst of the injuries happened to people's legs, while the shrapnel wounds have been relatively minor.
Anderson Cooper goes beyond the headlines to tell stories from many points of view, so you can make up your own mind about the news. Tune in weeknights at 8 and 10 ET on CNN.
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