CAT/C/MNG/CO/1 row prisoners, ill-treatment of migrant workers, trafficking in humans and domestic and sexual violence. The State party should compile statistical data relevant to the monitoring of the implementation of the Convention at the national level, including data on complaints, investigations, prosecutions and convictions of persons guilty of torture and ill-treatment, ill-treatment of migrant workers, death row prisoners, trafficking in humans and domestic and sexual violence, disaggregated by age, sex, ethnicity and type of crime, as well as on means for redress, including compensation and rehabilitation, provided to the victims. 28. The Committee recommends that the State party consider ratifying the Optional Protocol to the Convention against Torture and Other Cruel, Inhuman or Degrading Treatment or Punishment as soon as possible. 29. The Committee recommends that the State party consider making the declarations envisaged under articles 21 and 22 of the Convention. 30. The Committee invites the State party to ratify the core United Nations human rights treaties to which it is not yet a party, namely, the International Convention on the Protection of the Rights of All Migrant Workers and Members of their Families and the International Convention for the Protection of All Persons from Enforced Disappearance. 31. The State party is requested to disseminate widely the report submitted to the Committee and the Committee’s concluding observations, in appropriate languages, through official websites, the media and non-governmental organizations. 32. The Committee requests the State party to provide, within one year, follow-up information in response to the Committee’s recommendations contained in paragraphs 9, 11, 16 and 19 of the present document. 33. The Committee invites the State party to present its next periodic report in accordance with its reporting guidelines and to observe the page limit of 40 pages for the treaty-specific document. The Committee also invites the State party to submit a common core document in accordance with the requirements of the common core document contained in the harmonized guidelines on reporting under the international human rights treaties (HRI/GEN.2/Rev.6), approved by the intercommittee meeting of the human rights treaty bodies, and to observe the page limit of 80 pages for the common core document. The treaty-specific document and the common core document together constitute the reporting obligation of the State party under the Convention. 34. The State party is invited to submit its next periodic report, which will be the second periodic report, by 19 November 2014. 11