Since the Newtown tragedy, at least 173 children under the age of 12 have died from gunshots in the U.S. Some experts say this has become a public health issue. NBC's Dr. Nancy Snyderman reports.
Guns and health: The playdate question every parent should ask
Since the Newtown tragedy, at least 173 children under the age of 12 have died from gunshots in the U.S. Some experts say this has become a public health issue. NBC's Dr. Nancy Snyderman reports.