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APA Citation
Fernandez, M., Boyle, E., Hartvigsen, J., Ferreira, M., Refshauge, K., Maher, C., Christensen, K., Hopper, J., & Ferreira, P. (2017). is this back pain killing me? All‐cause and cardiovascular‐specific mortality in older Danish twins with spinal pain. European journal of pain, 21, 938–948. http://access.bl.uk/ark:/81055/vdc_100045410503.0x000053