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APA Citation
Beck, E. J., Donegan, C., Kenny, C., Cohen, C. S., Moss, V., Terry, P., Underhill, G. S., Jeffries, D. J., Pinching, A. J., & Miller, D. L. (1990). an update on HIV-testing at a London sexually transmitted diseases clinic: long-term impact of the AIDS media campaigns.. Sexually transmitted infections, 66(3), 142–147. http://access.bl.uk/ark:/81055/vdc_100182008159.0x000060