21. In addition to continuing its discussion of ongoing intergovernmental activities of the Council of Europe on matters within the CPT’s mandate and on its own internal working methods at all three meetings, the CPT held an exchange of views during the March meeting with the Chair of the Council of Europe Bioethics Committee on the draft Additional Protocol concerning the protection of human rights and dignity of persons with mental disorder to the Convention on Human Rights and Biomedicine (Oviedo Convention). Furthermore, the November meeting included an exchange of views with the Council of Europe Commissioner for Human Rights on topics of mutual interest such as migration, deinstitutionalisation and so-called “grey zones”. 22. The two standing subgroups of the CPT, the Working Group on Health and the Working Group on the CPT’s Jurisprudence, continued to meet on the Sunday before each plenary meeting. The Working Group on Health examines substantive issues of a medical nature related to the CPT’s mandate and organises training sessions on the specific tasks that medical members of visiting delegations are required to perform. The task of the Working Group on the CPT’s Jurisprudence is to advise the CPT on developments in the Committee’s standards as reflected in visit reports and to identify areas where there is room for development of those standards. The CPT also decided to set up a working group with the task of reviewing the ways and means through which the CPT’s impact might be enhanced. Contacts with other bodies 23. The CPT continued to promote contact with other bodies within the Council of Europe. For instance, the Committee was represented at two hearings organised by the Parliamentary Assembly: one on 28 June 2018 on protecting human rights during transfers of prisoners, the other on 10 October 2018 on ensuring greater follow-up of CPT recommendations. The President of the CPT participated in a thematic debate on conditions of detention organised by the Committee of Ministers on 13 March 2018 in order to enhance the execution of the judgments of the European Court of Human Rights and presented the CPT’s 27th annual general report to the Committee of Ministers during an exchange of views on 18 April 2018. Contacts were also maintained with the European Court of Human Rights, including participation of the CPT’s President in a seminar on the authority of the judiciary organised on the occasion of the opening of the Court’s judicial year on 26 January 2018. The CPT also had contacts with the Commissioner for Human Rights and her office (see paragraph 21 above); the Special Representative of the Secretary General on migration and refugees, and many other bodies and sectors of the Council of Europe. In addition, the CPT followed intergovernmental standard-setting carried out by the Committee of experts on administrative detention of migrants (CJ-DAM) on draft European rules on the administrative detention of migrants and the Committee on Bioethics (DH-BIO) concerning the draft Additional Protocol to the “Oviedo Convention” on the protection of human rights and dignity of persons with mental disorder (see paragraph 21 above). It also followed the activities of the Council of Europe Working Group of the Council for Penological Co-operation (PC-CP) as regards the revision of the European Prison Rules. Activities during the period 1 January to 31 December 2018 ► Page 13