1. World Health Organization Global HIV prevalence has levelled off 2007 http://www.who.int/mediacentre/news/releases/2007/pr61/en/index.html
2. Centre for Health Protection HIV surveillance report-2013 update 2014 http://www.chp.gov.hk/files/pdf/aids13.pdf
3. HIV surveillance and epidemiology press meeting presentation
4. National AIDS Trust HIV in the UK Statistics 2015 2016 http://www.nat.org.uk/we-inform/HIV-statistics/UK-statistics
5. Internalized stigma among people living with HIV-AIDS;Lee;AIDS Behav,2002