Nigg, C., C. Weber, J. Schipperijn, M. Reichert, D. Oriwol, A. Worth, A. Woll, and C. Niessner. “Urban-Rural Differences in children’s and adolescent’s Physical Activity and Screen Time Trends across 15 Years: Mini-Oral Presentation B1.7”. The Health & Fitness Journal of Canada, vol. 14, no. 3, Sept. 2021, doi:10.14288/hfjc.v14i3.596.