CRC/C/15/Add.191 page 5 20. The Committee recommends that the State party should, as a priority, systematically collect disaggregated data incorporating all the areas covered by the Convention and covering all children below the age of 18 years, with specific emphasis on those who are in need of special protection. The State party should also develop indicators to effectively monitor and evaluate progress achieved in the implementation of the Convention and assess the impact of policies that affect children. In this context, the Committee recommends that the State party seek technical assistance from UNICEF. Training/dissemination of the Convention 21. The Committee welcomes the efforts undertaken by the State party to disseminate the Convention and to train professionals working with and for children, in line with its previous recommendation (ibid., para. 21). However, the Committee is of the opinion that the measures to create widespread awareness and understanding of the principles and provisions of the Convention need to be further strengthened and implemented in an ongoing, systematic manner. 22. The Committee recommends that the State party: (a) Continue and strengthen its efforts to provide adequate and systematic training and/or sensitization on children’s rights to professional groups working with and for children, such as parliamentarians, judges, lawyers, law enforcement and health personnel, teachers, school administrators and others as required; (b) Continue to develop more creative methods to promote the Convention, including through audio-visual aids, such as picture books and posters, in particular at local level, and through the media. Cooperation with NGOs 23. The Committee welcomes the improvement in relation between the Government and civil society with increased cooperation between the Government and NGOs. However, the Committee remains concerned that insufficient efforts have been made to involve civil society in the implementation of the Convention following a rights-based approach. 24. The Committee emphasizes the important role civil society plays as a partner in implementing the provisions of the Convention, including with respect to civil rights and freedoms, and reiterates its recommendations (ibid., para. 18) that the State party promote closer cooperation with NGOs and, in particular, to consider involving NGOs, especially rights-based ones, and other sectors of civil society working with and for children more systematically throughout all stages of the implementation of the Convention. 2. Definition of the child 25. The Committee is concerned that despite its previous recommendation (ibid., para. 17) there remain disparities in the minimum age of marriage for boys (18) and girls (17). It is also concerned that there is no clearly defined minimum legal age for sexual consent.