From the American Academy of Pediatrics---
https://www.aap.org/en-us/about-the-aap/aap-press-room/pages/american-academy-of-pediatrics-announces-new-recommendations-for-childrens-media-use.aspx
Additional information---
https://well.blogs.nytimes.com/2016/03/21/a-reconsideration-of-children-and-screen-time/?mcubz=0
https://www.cnn.com/2017/10/19/health/children-smartphone-tablet-use-report/index.html
Past post---
http://metamoracommunityprek.blogspot.com/2013/05/screen-time.html
