i ) Participation in the work of the Economic and Social Council and its subsidiary bodies and/or major conferences and other United Nations meetings as follows : Representatives of AIDS Information Switzerland attended the following meetings : 2007 : In Europe , related to human rights : `` Human Rights Council '' 4th session on 12 March to 5 April in Geneva , Switzerland ; `` IV Latin-American and Caribbean Forum on HIV/AIDS and STD '' ( sexually transmitted diseases ) on 17 - 20 April in Buenos Aires , Argentina .