TY - JOUR T1 - Quality of kids’ screen time matters as much as quantity JF - Canadian Medical Association Journal JO - CMAJ SP - E721 LP - E721 DO - 10.1503/cmaj.109-5767 VL - 191 IS - 25 AU - Lauren Vogel Y1 - 2019/06/24 UR - http://www.cmaj.ca/content/191/25/E721.abstract ER -