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APA Citation
Jebbari, H., Simms, I., Conti, S., Marongiu, A., Hughes, G., Ward, H., Powers, C., Thomas, D. R., & Evans, B. (2011). variations in the epidemiology of primary, secondary and early latent syphilis, England and Wales: 1999 to 2008. Sexually transmitted infections, 87(3), 191–198. http://access.bl.uk/ark:/81055/vdc_100135136460.0x00000d