A/RES/57/176 15. Calls upon Governments to take steps to ensure that the treatment of victims of trafficking, especially women and girls, as well as all measures taken against trafficking in persons, in particular those that affect the victims of such trafficking, are applied with full respect for the human rights of those victims and are consistent with internationally recognized principles of non-discrimination, including the prohibition of racial discrimination and the availability of appropriate legal redress; 16. Invites Governments to take steps, including witness protection programmes, to enable women who are victims of trafficking to make complaints to the police or other authorities, as appropriate, and to be available when required by the criminal justice system, and to ensure that during this time women have access to protection and social, medical, financial and legal assistance, as appropriate; 17. Also invites Governments to consider preventing, within the legal framework and in accordance with national policies, victims of trafficking, in particular women and girls, from being prosecuted for their illegal entry or residence, bearing in mind that they are victims of exploitation; 18. Further invites Governments to encourage Internet service providers to adopt or strengthen self-regulatory measures to promote the responsible use of the Internet with a view to eliminating trafficking in women and children, in particular girls; 19. Invites the business sector, in particular the tourism and telecommunications industries, including mass media organizations, to cooperate with Governments in eliminating trafficking in women and children, in particular girls; 20. Stresses the need for a global approach to eradicate trafficking in women and children and the importance, in this regard, of systematic data collection and comprehensive studies using common methodology and internationally defined indicators, which need to be developed, to make it possible to gather relevant and comparable figures, and encourages Governments to develop systematic datacollection methods using such common methodology and indicators and to update continuously information on trafficking in women and girls, including the analysis of the modus operandi of trafficking syndicates; 21. Urges Governments to strengthen national programmes to combat trafficking in women and girls through sustained bilateral, regional and international cooperation, taking into account innovative approaches and best practices, and invites Governments, United Nations bodies and organizations, intergovernmental and non-governmental organizations and the private sector to undertake collaborative and joint research and studies on trafficking in women and girls that can serve as a basis for policy formulation or change; 22. Invites Governments, once again, with the support of the United Nations, and taking into account current research and materials on traumatic stress and gender-sensitive counselling techniques, to formulate training manuals for law enforcement and medical personnel and judicial officers who handle cases of trafficked women and girls, with a view to sensitizing them to the special needs of victims; 23. Urges Governments to provide or strengthen training for law enforcement, immigration and other relevant officials in the prevention of trafficking in persons, which should focus on methods used in preventing such trafficking, prosecuting the traffickers and protecting the rights of victims, including 6