Girls who used social media for at least two to three hours per day at the beginning of the study--when they were about 13 years old--and...

Girls who used social media for at least two to three hours per day at the beginning of the study--when they were about 13 years old--and...

Girls who used social media for at least two to three hours per day at the beginning of the study--when they were about 13 years old--and...