3. The Secretary-General of the United Nations shall convene the initial meeting of the Subcommittee on Prevention. After its initial meeting, the Subcommittee on Prevention shall meet at such times as shall be provided by its rules of procedure. The Subcommittee on Prevention and the Committee against Torture shall hold their sessions simultaneously at least once a year. PART III Mandate of the Subcommittee on Prevention Article 11 1. The Subcommittee on Prevention shall: (a) Visit the places referred to in article 4 and make recommendations to States Parties concerning the protection of persons deprived of their liberty against torture and other cruel, inhuman or degrading treatment or punishment; (b) In regard to the national preventive mechanisms: (i) Advise and assist States Parties, when necessary, in their establishment; (ii) Maintain direct, and if necessary confidential, contact with the national preventive mechanisms and offer them training and technical assistance with a view to strengthening their capacities; (iii) Advise and assist them in the evaluation of the needs and the means necessary to strengthen the protection of persons deprived of their liberty against torture and other cruel, inhuman or degrading treatment or punishment; (iv) Make recommendations and observations to the States Parties with a view to strengthening the capacity and the mandate of the national preventive mechanisms for the prevention of torture and other cruel, inhuman or degrading treatment or punishment; (c) Cooperate, for the prevention of torture in general, with the relevant United Nations organs and mechanisms as well as with the international, regional and national institutions or organizations working towards the strengthening of the protection of all persons against torture and other cruel, inhuman or degrading treatment or punishment. Article 12 In order to enable the Subcommittee on Prevention to comply with its mandate as laid down in article 11, the States Parties undertake: (a) To receive the Subcommittee on Prevention in their territory and grant it access to the places of detention as defined in article 4 of the present Protocol; (b) To provide all relevant information the Subcommittee on Prevention may request to evaluate the needs and measures that should be adopted to strengthen the protection of persons deprived of their liberty against torture and other cruel, inhuman or degrading treatment or punishment; (c) To encourage and facilitate contacts between the Subcommittee on Prevention and the national preventive mechanisms; 91