A/65/44 women and girls constitute a violation of the Convention. The Committee urges the State party to ensure that violence against women and girls, including domestic violence, rape (even marital rape), and all forms of sexual abuse, is made a criminal offence, that perpetrators are prosecuted and punished and that their victims are rehabilitated, and that female victims of violence may seek immediate redress, protection and compensation. In addition, the Committee urges the State party to remove any impediments to access to justice by women and girls and recommends that legal assistance be made available to victims of violence. Moreover, the Committee reiterates its previous recommendation on the amendment of legislation that exempts from punishment rapists who marry their victims. Collection of statistical data (31) The Committee notes that it did receive some statistical data but regrets the lack of detailed disaggregated data on complaints, investigations, prosecutions and convictions in cases of torture and cruel, inhuman or degrading treatment attributed to members of the security forces, as well as on trafficking in persons, domestic violence and sexual violence (arts. 1, 2, 12, 13, 14 and 16). The State party should establish an effective system for collecting statistics to allow monitoring of the national implementation of the Convention, especially on complaints, investigations, criminal prosecutions, convictions and compensation paid in cases of torture and ill-treatment, violence among prisoners, trafficking in persons and domestic and sexual violence. The Committee realizes that the collection of personal data raises sensitive confidentiality issues, and emphasizes that appropriate measures should be taken to avoid misuse of data. (32) The Committee takes note of the State party’s response to the recommendation made in the course of the universal periodic review that it ratify the Optional Protocol to the Convention against Torture and Other Cruel, Inhuman or Degrading Treatment or Punishment and that it set up a national preventive mechanism (A/HRC/11/21/Add.1, Recommendation 76 [1]), and encourages it to take all the necessary steps to ratify it as soon as possible. (33) The Committee encourages the State party to continue working with the Centre for Human Rights and Democracy in Central Africa, the subregional bureau of the Office of the United Nations High Commissioner for Human Rights, in order to implement the Committee’s recommendations. (34) The State party should establish effective mechanisms to collect data and generate criminal and criminology statistics and all statistics relevant to monitoring of the nationwide implementation of the Convention. The State party should thus provide in its next periodic report the following data, which will facilitate the Committee’s assessment of the implementation of its obligations under the Convention: (a) Statistics on the capacity and population of every prison in Cameroon, including data disaggregated by gender and age group (adults/children), and differentiating between prisoners in pretrial detention and convicts; (b) stations; (c) (d) imposed; (e) 90 Statistics on violence in detention centres and police and gendarmerie Statistics on complaints of alleged torture and action taken; Statistics on corruption among law enforcement officials and penalties Statistics on cases of extradition, expulsion or refoulement; GE.10-44721