Rights of the child A/RES/70/137 recognized as having infringed penal law, as well as children of persons alleged to have infringed or recognized as having infringed penal law; 28. Encourages continued regional and cross-regional efforts, the sharing of best practices and the provision of technical assistance in the field of juvenile justice, acknowledges in this regard the holding of the World Congress on Juvenile Justice in Geneva, from 26 to 30 January 2015, and noting with interest its final declaration; 29. Encourages States to develop and implement a comprehensive juvenile justice policy to protect and address the needs of children in contact with the law, with a view to promoting, inter alia, a commitment to improving the quality of education available to children placed in alternative care and within the juvenile justice system, crime prevention programmes, the use of alternative measures, such as diversion, restorative justice and community-based programmes that focus on the rehabilitation and reintegration of the child, and ensuring compliance with the principle that deprivation of liberty of children should be used only as a measure of last resort and for the shortest appropriate period of time, as well as to avoid, wherever possible, the use of pretrial detention for children; Prevention and eradication of the sale of children, child prostitution and child pornography 30. Reaffirms paragraph 58 of its resolution 68/147, and calls upon all States to prevent, criminalize, prosecute and punish all forms of the sale and trafficking of children, including for the purposes of removal of organs of the child for profit, child slavery, and the sexual exploitation of children, including child prostitution and child pornography, with the aim of eradicating those pra ctices and the use of the Internet and other information and communications technologies for these purposes, to combat the existence of a market that encourages such criminal practices and take measures to eliminate the demand that fosters them, as well as to address the rights and needs of victims effectively and take effective measures against the criminalization of children who are victims of exploitation; Children affected by armed conflict 31. Reaffirms paragraphs 59 to 70 of its resolution 68/147, condemns in the strongest terms all violations and abuses committed against children in armed conflict, and in this regard urges all States and other parties to armed conflict that are engaged, in contravention of applicable international law, in the recruitment and use of children, in patterns of killing and maiming of children and/or rape and other sexual violence against children, acknowledging that sexual violence in these situations disproportionately affects girls, in recurrent attacks on schools and/or hospitals and related personnel, and in patterns of abduction of children, as well as in all other violations and abuses against children, to take time -bound and effective measures to end and prevent them, and takes note in this regard of the adoption of Security Council resolution 2225 (2015) of 18 June 2015; 32. Urges all States, United Nations agencies, funds and programmes, other relevant international and regional organizations and civil society to giv e serious attention to, and to protect and assist child victims of, all violations and abuses 9/16