List of specific abbreviations APT Association for the Prevention of Torture CAT Convention against Torture and other Cruel, Inhuman or Degrading Treatment or Punishment CPT European Committee for the Prevention of Torture and Inhuman or Degrading Treatment or Punishment ECHR European Court of Human Rights ETS European Treaty Series NPM National Preventive Mechanism OP-CAT Optional Protocol to the Convention against Torture and other Cruel, Inhuman or Degrading Treatment or Punishment SPT Subcommittee on the Prevention of Torture and other Cruel, Inhuman or Degrading Treatment or Punishment 6