Guns are the leading cause of death for Americans aged 1 to 19. Three parents who lost their children to firearms - Gwendolyn LaCroix, Kristin Song, and Mark Barden - tell CBS News senior medical correspondent Dr. Tara Narula about the need for stronger safe gun storage laws. Dr. Chethan Sathya, a pediatric trauma surgeon and director of Northwell Health Center's Gun Violence Prevention discusses how the medical community is beginning to treat gun-related deaths and injuries as a public health issue.See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.