1. Kallings LO: The first postmodern pandemic: 25 years of HIV/AIDS. J Intern Med. 2008, 263: 218-243. 10.1111/j.1365-2796.2007.01910.x.
2. WHO: Progress report. Global HIV/AIDS response: epidemic update and health sector progress towards universal access. 2011, http://www.unaids.org/en/media/unaids/contentassets/documents/unaidspublication/2011/20111130_ua_report_en.pdf ,
3. UNAIDS: Joint United Nations program on HIV/AIDS. How to get zero faster, smarter, better, World AIDS day report. 2011, http://www.unaids.org/en/media/unaids/contentassets/documents/unaidspublication/2011/jc2216_worldaidsday_report_2011_en.pdf ,
4. Imanguli N: Youth and the global HIV/AIDS pandemic. 2008, Advocates for youth, http://www.advocatesforyouth.org/storage/advfy/documents/fsglobalhiv.pdf ,
5. Federal Ministry of Health, Ethiopia: Strategic plan for intensifying multisectoral HIV and AIDS response in Ethiopia II (SPM II) 2009–2014. 2009, Federal HIV/AIDS Prevention and Control Office