12 Foreword OHCHR Office of the United Nations High Commissioner for Human Rights OPCAT Optional Protocol to the Convention against Torture SOGI Sexual orientation and/or gender identity SOGIESC Sexual orientation, gender identity and expression and/or sexual characteristics SPT (United Nations) Subcommittee for the Prevention of Torture STI Sexually transmitted infection UN United Nations UNHCR Office of the United Nations High Commissioner for Refugees WGAD (United Nations) Working Group on Arbitrary Detention WHO World Health Organisation WSW Women who have sex with women YP Yogyakarta Principles on the Application of International Human Rights Law in relation to Sexual Orientation and Gender Identity YP + 10 Additional Principles and State Obligations on the Application of International Human Rights Law in relation to Sexual Orientation, Gender Identity, Gender Expression and Sex Characteristics to Complement the Yogyakarta Principles