(a) To prevent and combat trafficking in persons; and (b) To protect victims of trafficking in persons, especially women and children, from revictimization. 2. States Parties shall endeavour to undertake measures such as research, information and mass media campaigns and social and economic initiatives to prevent and combat trafficking in persons. 3. Policies, programmes and other measures established in accordance with this article shall, as appropriate, include cooperation with non-governmental organizations, other relevant organizations and other elements of civil society. 4. States Parties bilateral or multilateral especially women and underdevelopment and shall take or strengthen measures, including through cooperation, to alleviate the factors that make persons, children, vulnerable to trafficking, such as poverty, lack of equal opportunity. 5. States Parties shall adopt or strengthen legislative or other measures, such as educational, social or cultural measures, including through bilateral and multilateral cooperation, to discourage the demand that fosters all forms of exploitation of persons, especially women and children, that leads to trafficking. Article 10. Information exchange and training 1. Law enforcement, immigration or other relevant authorities of States Parties shall, as appropriate, cooperate with one another by exchanging information, in accordance with their domestic law, to enable them to determine: (a) Whether individuals crossing or attempting to cross an international border with travel documents belonging to other persons or without travel documents are perpetrators or victims of trafficking in persons; (b) The types of travel document that individuals have used or attempted to use to cross an international border for the purpose of trafficking in persons; and (c) The means and methods used by organized criminal groups for the purpose of trafficking in persons, including the recruitment and transportation of victims, routes and links between and among individuals and groups engaged in such trafficking, and possible measures for detecting them. 2. States Parties shall provide or strengthen training for law enforcement, immigration and other relevant officials in the prevention of trafficking in 46