1. World Health Organization. Sexually transmitted infections (STIs): Key facts. 2016 [cited 2018 Jul 17]. Available from:
http://www.who.int/news-room/fact-sheets/detail/sexually-transmitted-infections-(stis)
.
2. BC Centre for Disease Control. STI annual report. 2015. Vancouver: BC Centre for Disease Control
3. [cited 2018 Jul 15]. Available from: http://www.bccdc.ca/resource-gallery/Documents/Statistics%20and%20Research/Statistics%20and%20Reports/STI/STI_Annual_Report_2015-FINAL.pdf
4. Kirby Institute. HIV, viral hepatitis and sexually transmissible infections in Australia: annual surveillance report. Sydney: Kirby Institute, UNSW; 2017. Available from:
https://kirby.unsw.edu.au/sites/default/files/kirby/report/SERP_Annual-Surveillance-Report-2017_compressed.pdf
5. Abara WE, Hess KL, Neblett Fanfair R, Bernstein KT, Paz-Bailey G. Syphilis trends among men who have sex with men in the United States and Western Europe: a systematic review of trend studies published between 2004 and 2015. PLoS One. 2016;11(7):e0159309.