Moderators of the longitudinal relationship between the perceived physical environment and outside play in children: the KOALA birth cohort study

Teun Remmers, Dave Van Kann, Jessica Gubbels, Swantje Schmidt, Sanne de Vries, Dick Ettema, Stef Kremers, Carel Thijs
International Journal of Behavioral Nutrition and Physical Activity 2014, 11:150 (12 December 2014)

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