2. The Committee shall establish its own rules of procedure, but these rules shall provide, inter alia, that: (a) Six members shall constitute a quorum; (b) Decisions of the Committee shall be made by a majority vote of the members present. 3. The Secretary-General of the United Nations shall provide the necessary staff and facilities for the effective performance of the functions of the Committee under this Convention. 4. The Secretary-General of the United Nations shall convene the initial meeting of the Committee. After its initial meeting, the Committee shall meet at such times as shall be provided in its rules of procedure. 5. The States Parties shall be responsible for expenses incurred in connection with the holding of meetings of the States Parties and of the Committee, including reimbursement to the United Nations for any expenses, such as the cost of staff and facilities, incurred by the United Nations pursuant to paragraph 3 of this article. Article 19 1. The States Parties shall submit to the Committee, through the Secretary-General of the United Nations, reports on the measures they have taken to give effect to their undertakings under this Convention, within one year after the entry into force of the Convention for the State Party concerned. Thereafter the States Parties shall submit supplementary reports every four years on any new measures taken and such other reports as the Committee may request. 2. The Secretary-General of the United Nations shall transmit the reports to all States Parties. 3. Each report shall be considered by the Committee which may make such general comments on the report as it may consider appropriate and shall forward these to the State Party concerned. That State Party may respond with any observations it chooses to the Committee. 4. The Committee may, at its discretion, decide to include any comments made by it in accordance with paragraph 3 of this article, together with the observations thereon received from the State Party concerned, in its annual report made in accordance with article 24. If so requested by the State Party concerned, the Committee may also include a copy of the report submitted under paragraph I of this article. Article 20 1. If the Committee receives reliable information which appears to it to contain well-founded indications that torture is being systematically practised in the territory of a State Party, the Committee shall invite that State Party to co-operate in the examination of the information and to this end to submit observations with regard to the information concerned.