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Remmers T, Thijs C, Ettema D, de Vries S, Slingerland M, Kremers S. Critical Hours and Important Environments: Relationships between Afterschool Physical Activity and the Physical Environment Using GPS, GIS and Accelerometers in 10–12-Year-Old Children. International Journal of Environmental Research and Public Health. 2019; 16(17):3116. https://doi.org/10.3390/ijerph16173116

Remmers, Teun, Carel Thijs, Dick Ettema, Sanne de Vries, Menno Slingerland, and Stef Kremers. 2019. "Critical Hours and Important Environments: Relationships between Afterschool Physical Activity and the Physical Environment Using GPS, GIS and Accelerometers in 10–12-Year-Old Children" International Journal of Environmental Research and Public Health 16, no. 17: 3116. https://doi.org/10.3390/ijerph16173116

Remmers, T., Thijs, C., Ettema, D., de Vries, S., Slingerland, M., & Kremers, S. (2019). Critical Hours and Important Environments: Relationships between Afterschool Physical Activity and the Physical Environment Using GPS, GIS and Accelerometers in 10–12-Year-Old Children. International Journal of Environmental Research and Public Health, 16(17), 3116. https://doi.org/10.3390/ijerph16173116