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APA Citation
Bödeker, M., Bucksch, J., & Wallmann-Sperlich, B. (2018). self-reported physical activity within and outside the neighborhood: Criterion-related validity of the Neighborhood Physical Activity Questionnaire in German older adults. Measurement in physical education and exercise science, 22(1), 61–69. http://access.bl.uk/ark:/81055/vdc_100054860531.0x00003b