&37*HQHUDO5HSRUW 3OHQDU\PHHWLQJVDQGDFWLYLWLHVRI VXEJURXSV 10. The CPT held three one-week plenary meetings during the twelve months covered by this General Report, in November 2010 and in March and July 2011. The Committee was pleased to be able to have a wide-ranging exchange of views with the Secretary General of the Council of Europe, Thorbjørn Jagland, at its July meeting. A total of 18 visit reports were adopted by the Committee at these meetings, seven of them drawn up under the expedited drafting procedure (according to which draft visit reports prepared by visiting delegations that are circulated at least two weeks before a plenary meeting are taken as approved without debate, save for paragraphs in respect of which a discussion has been specifically requested in advance). 11. The two standing subgroups of the CPT, the Jurisprudence Group and the Medical Group, have continued to meet on the eve of each plenary meeting. The Jurisprudence Group advises the CPT on innovations and possible inconsistencies in the Committee’s standards as reflected in visit reports, and identifies areas where there is room for development of the standards. The Medical Group 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. Ad hoc working groups have also been set up to examine specific topics. For example, one such group was responsible for preparing the substantive section on solitary confinement of prisoners contained in this General Report. Another ad hoc working group is currently undertaking a review of the Committee’s standards in the field of psychiatry, in the light inter alia of the UN Convention on the Rights of Persons with Disabilities. A third ad hoc working group is examining the possible involvement of the CPT in the monitoring of the deportation of foreign nationals by air (“return flights”). &RQWDFWVZLWKRWKHUERGLHV 12. The CPT’s President had the opportunity to address the 30th Council of Europe Conference of Ministers of Justice held in Istanbul from 24-26 November 2010. Responding to an invitation from the Justice Ministers, the Committee of Ministers subsequently entrusted the European Committee on Crime Problems, in cooperation with the Steering Committee for Human Rights and the CPT, to take stock of the problems faced by prison administrations in Europe and consider whether there is a need to reinforce the existing legal framework. Those problems include overcrowding and the interrelated issue of the excessive recourse to – and excessive length of – pretrial detention. The CPT is fully prepared to play its part in joint endeavours within the framework of the Council of Europe to meet these challenges.