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APA Citation
MacDonald, T. M., Sharpe, K., Fowler, G., Lyons, D., Freestone, S., Lovell, H. G., Webster, J., & Petrie, J. C. (1991). caffeine restriction: effect on mild hypertension.. BMJ, 303(6812), 1235–1238. http://access.bl.uk/ark:/81055/vdc_100141636533.0x000021