Gender-based violence may take many forms, ranging from intimate-partner violence, rape, workplace harassment, female genital mutilation, human trafficking and murder. A 2013 review by the World Health Organization estimates that 36 per cent of women have experienced intimate-partner violence or sexual violence by a non-partner, with lower rates for men (World Health Organization, 2013). Young girls and boys are particularly vulnerable, with wide-ranging negative consequences for the health and welfare of victims. Among men, about one in nine in Tanzania and one in 10 in Zimbabwe had similar experiences.