More than 1 in 10 middle and high school students in the United States used e-cigarettes within the last month, according to a University of Michigan study that found the rate in some schools is as high as 60%.
More than 1 in 10 middle and high school students in the United States used e-cigarettes within the last month, according to a University of Michigan study that found the rate in some schools is as high as 60%.