Screen time has more than doubled for children under 2 years old since 1997, a study published Monday in the journal JAMA Pediatrics found, with time spent in front of a TV as the main driver despite a changing screen landscape.
원문출처 : https://www.cnn.com/2019/02/18/health/kids-screen-time-tv-study/index.html
원문출처 : https://www.cnn.com/2019/02/18/health/kids-screen-time-tv-study/index.html