http://www.who.int/hiv/pub/mtct/en/arvdrugsguidelines.pdf

It underlines the effectiveness of antiretroviral drugs to prevent the transmission of HIV from seropositive mothers to their children, and takes into account the most recent information on the safety and effectiveness of different drug regimens, as well as concerns over resistance to some of the drugs used, including nevirapine. Document in pdf format; Acrobat Reader required.