Catrine Tudor-Locke, Cora L Craig, Michael W Beets, Sarahjane Belton, Greet M Cardon, Scott Duncan, Yoshiro Hatano, David R Lubans, Timothy S Olds, Anders Raustorp, David A Rowe, John C Spence, Shigeho Tanaka, Steven N Blair, None, How many steps/day are enough? for children and adolescentsInternational Journal of Behavioral Nutrition and Physical Activity. ,vol. 8, pp. 78- 78 ,(2011) , 10.1186/1479-5868-8-78