CHAPTER 2 STUDY PROCESS AND RESEARCH METHODOLOGY • Review of UN Charter-based bodies, such as ࢕ Human Rights Council (Universal Periodic Reviews) ࢕ Special Procedures, such as the Special Rapporteurs on Persons with Disabilities, on Torture, on the right of everyone to the enjoyment of the highest attainable standard of physical and mental health; on the sale and sexual exploitation of children, including child prostitution, child pornography and other child sexual abuse material. ࢕ Working Groups such as on Arbitrary Detention or Discrimination against Women • Review reports and data of UN agencies: ࢕ UNODC ࢕ UNICEF ࢕ UNHCR ࢕ IOM ࢕ OHCHR ࢕ WHO ࢕ SRSG on Violence against Children ࢕ SRSG on Children and Armed Conflict • Review of information gathered from National Human Rights Institutions (NHRIs), Global Alliance of National Human Rights Institutions (GANHRI), European Network of Ombudspersons for Children (ENOC), etc. • Review from partners of the NGO Panel, such as Human Rights Watch (HRW), Defence for Children International (DCI), International Detention Coalition (IDC), Global Detention Project (GDP), Child Rights International Network (CRIN), as well as from National Child Rights Coalitions/Child Rights Connect, etc. 3.3 Data Collection Various United Nations agencies (UNICEF, UNODC, UNHCR, OHCHR), the ICRC, the European Fundamental Rights Agency, Government organisations, internationally renowned experts in children’s rights, child justice, statistics and indicators, and academics came together to design the Global Study questionnaire, which was translated into all UN languages and sent in February 2018 to all UN Member States. The questionnaire consists of 78 questions and was circulated to Governments, National Human Rights Institutions (NHRIs), National Prevention Mechanisms (NPMs), ombudspersons, UN agencies as well as NGOs. 28