@article{cesare2019social,
  title={Social media captures demographic and regional physical activity},
  author={Cesare, Nina and Nguyen, Quynh C and Grant, Christan and Nsoesie, Elaine O},
  journal={BMJ open sport \& exercise medicine},
  volume={5},
  number={1},
  pages={e000567},
  year={2019},
  publisher={BMJ Specialist Journals}
}