V. PREVENTION AND ERADICATION OF THE SALE OF CHILDREN, CHILD PROSTITUTION AND CHILD PORNOGRAPHY 37. Calls upon all States: (a) To take all appropriate national, bilateral and multilateral measures, inter alia to develop national laws and allocate resources for the development of long-term policies, programmes and practices and to collect comprehensive and disaggregated gender-specific data, to facilitate the participation of child victims of sexual abuse and exploitation in the development of strategies and to ensure the effective implementation of relevant international instruments concerning the prevention and the combat of trafficking and sale of children for any purpose or in any form, including the transfer of the organs of the child for profit, child prostitution and child pornography, and encourages all actors of civil society, the private sector and the media to cooperate in efforts to this end; (b) To increase cooperation at all levels to prevent and dismantle networks trafficking in children; (c) To consider ratifying or acceding to the Protocol to Prevent, Suppress and Punish Trafficking in Persons, Especially Women and Children, supplementing the United Nations Convention against Transnational Organized Crime; (d) To criminalize and effectively penalize all forms of sexual exploitation and sexual abuse of children, including within the family or for commercial purposes, child pornography and child prostitution, child trafficking, child sex tourism, the sale of children and their organs, and the use of the Internet for these purposes, while ensuring that, in the treatment by the criminal justice system of children who are victims, the best interests of the child shall be a primary consideration, and to take effective measures against the criminalization of children who are victims of exploitation and effective measures to ensure prosecution of offenders, whether local or foreign, by the competent national authorities, either in the country where the crime was committed, or in the offender’s country of origin, or in the country of destination, in accordance with due process of law; (e) In cases of the sale of children, child prostitution and child pornography, to address effectively the needs of victims, including their physical and psychological recovery and full reintegration into society; (f) To combat the existence of a market that encourages such criminal practices against children and factors leading to these practices, including through the adoption and effective application of preventive and enforcement measures targeting customers or individuals who sexually exploit or sexually abuse children, as well as ensuring public awareness; (g) To afford one another the greatest measure of assistance in connection with investigations or criminal or extradition proceedings brought in respect of the offences set forth in article 3, paragraph 1, of the Optional Protocol to the Convention on the Rights of the Child on the sale of children, child prostitution and child pornography, including assistance in obtaining evidence at their disposal for the proceedings; (h) To contribute to the elimination of the sale of children, child prostitution and child pornography by adopting a holistic approach, addressing the contributing factors, page 11