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APA Citation
Black, V., Maseko, V., Venter, F., Radebe, F., Mullick, S., Rees, H., & Lewis, D. (n.d.). p14.17 Surveillance for sexually transmitted infections among female sex workers in inner-city johannesburg. Sexually transmitted infections, 91, A204–A205. http://access.bl.uk/ark:/81055/vdc_100135138333.0x00000c