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APA Citation
Stockwell, S., Trott, M., Tully, M., Shin, J., Barnett, Y., Butler, L., McDermott, D., Schuch, F., & Smith, L. (2021). changes in physical activity and sedentary behaviours from before to during the COVID-19 pandemic lockdown: a systematic review. BMJ open sport & exercise medicine, 7(1), . http://access.bl.uk/ark:/81055/vdc_100127559076.0x000012