Victims' access to rape kits is often limited. In many locations, the non-availability of rape kits prevents victims from obtaining medico-legal evidence that would otherwise aid in the criminal investigation and prosecution of their assailant. In Nigeria, for example, a study analyzing sexual assault in Ile-Ife found that the majority of victims went to the hospital within 24 hours of a sexual assault, but did not receive a forensic medical examination because rape kits have yet to be introduced in the country.