CRC/C/15/Add.222 page 14 (b) Increase protection provided to victims of sexual exploitation and trafficking, including prevention, social reintegration, access to health care and psychological assistance in a coordinated manner, including by enhancing cooperation with NGOs, taking into account the Declaration and Agenda for Action and the Global Commitment adopted at the 1996 and 2001 World Congresses against Commercial Sexual Exploitation of Children; (c) Ensure that a confidential, accessible and child-sensitive mechanism is established to receive and effectively address individual complaints from all children, including those in the 15-18 years age group; (d) Train law enforcement officials, social workers and prosecutors on how to receive, monitor, investigate and prosecute reported cases of sexual abuse, in a child-sensitive manner; (e) Ratify the Optional Protocol to the Convention on the Rights of the Child on the sale of children, child prostitution and child pornography; (f) Seek technical assistance from, inter alia, UNICEF. Street children 64. The Committee shares the concern expressed by the Committee on Economic, Social and Cultural Rights and the findings of the Special Rapporteur on the sale of children, child prostitution and child pornography regarding the high number of street children who are often victims of trafficking networks and various other forms of exploitation, indicating that the number of children living on the streets is increasing and that families are allowing children as young as 7 to make a living on the streets. Furthermore, the Committee is deeply concerned by allegedly widespread police brutality towards street children. 65. The Committee recommends that the State party: (a) Undertake a study to assess the scope and causes of the phenomenon and consider establishing a comprehensive strategy to address the increasing number of street children with the aim of preventing and reducing this phenomenon in the best interests of these children and with their participation; (b) Make additional efforts to provide protection to children living on the streets and to ensure their access to education and health services; (c) Strengthen the support and assistance to families in this respect; (d) Continue to support NGOs to assist these children.