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APA Citation
Cassano, P., Guertin, K., Kristal, A., Ritchie, K., Bertoia, M., Arnold, K., Crowley, J., Hartline, J., Goodman, P., Tangen, C., Minasian, L., Lippman, S., & Klein, E. (2015). a randomized controlled trial of vitamin E and selenium on rate of decline in lung function. Respiratory research, 16(1), 1–9. http://access.bl.uk/ark:/81055/vdc_100080867691.0x000024