A/RES/72/245 Rights of the child strategy that integrates a human rights perspective, and to draw up, as appropriate, national action plans in this regard; (q) To strengthen measures to eliminate the demand for child sex tourism and to ensure the effective protection of children from exploitation through all possible preventive actions, including legislative measures and other relevant policies and programmes; (r) To protect the child against all other forms of exploitation prejudicial to any aspect of the child’s welfare; (s) To continue to seek to prevent, respond to, investigate and prosecute violations and abuses against children in humanitarian emergencies, to strengthen support services for children affected by humanitarian emerge ncies, including those who have experienced violations and abuses, and to call for a more effective response in that regard; (t) To invest in the development and implementation of data systems to monitor violence against children and track progress and to promote, where possible, innovation in the area of data collection and monitoring, including using benchmarks and indicators, to ensure access to reliable disaggregated data; (u) To encourage and support the private sector, including the corporate sector, to put in place policies and processes, appropriate to their size and circumstances, that ensure that their activities do not cause or contribute to violence against and exploitation of children; (v) To support the work of the independent expert for the global study on the situation of children deprived of their liberty; IV Follow-up 37. Recalls paragraph 52 (d) of its resolution 69/157 of 18 December 2014, in which it invited the Secretary-General to commission an in-depth global study on children deprived of their liberty, to be funded through voluntary contributions, also recalls paragraph 88 of its resolution 71/177, in this regard encourages Member States and United Nations agencies, funds, programmes and offices, as well as other relevant stakeholders, to contribute to and support the elaboration of the study, and invites the designated independent expert to update Member States at its seventy-third session on the progress made and to submit a final report to the General Assembly at its seventy-fourth session; 38. Welcomes the appointment of Virginia Gamba as the Special Representative of the Secretary-General for Children and Armed Conflict, pursuant to General Assembly resolutions 51/77 and 60/231 of 23 December 2005, and recognizes the progress achieved since the establishment of the mandate of the Special Representative, as extended by the Assembly in its resolution 69/157; 39. Recognizes the work of the Office of the Special Representative of the Secretary-General for Children and Armed Conflict, its increased level of work and the progress achieved since the establishment of the mandate of the Special Representative, and, bearing in mind its resolution 63/241 of 24 December 2008 and paragraphs 35 to 37 of its resolution 51/77, recommends that the Secretary-General extend the mandate of the Special Representative for a further period of three years; 40. Decides: (a) To request the Secretary-General to submit to the General Assembly at its seventy-third session a comprehensive report on the rights of the child containing 14/15 17-23328