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APA Citation
Thomsen, S. C., Gallo, M. F., Ombidi, W., Omungo, Z., Janowitz, B., Hawken, M., Tucker, H., Wong, E. L., & Hobbs, M. M. (2007). randomised controlled trial on whether advance knowledge of prostate-specific antigen testing improves participant reporting of unprotected sex. Sexually transmitted infections, 83(5), 419–420. http://access.bl.uk/ark:/81055/vdc_100135546621.0x00000e