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APA Citation
Sheldon, J., Hill, D. M., Brearley, B. F., Dipple, P. E., Bloom, A., Gurling, K. J., Pilkington, T. R., Hayes, T. M., Sonksen, P., & Hockaday, T. D. (1976). insulin: U40, U80, or U100.. BMJ, 2(6047), 1319. http://access.bl.uk/ark:/81055/vdc_100143171227.0x000030