619. Notwithstanding section 20 of the Health Insurance Act (chapter A-29) as amended by section 567 of this Act, a regulation made under subparagraph e.1 of the first paragraph of section 69 of the Health Insurance Act enacted by paragraph 1 of section 581 has no effect with regard to the agreement of 2 April 1988 between the Minister of Health and Social Services and the Association québécoise des pharmaciens propriétaires. The Minister of Health and Social Services must consult the representative body in question before proposing to the Government that it adopt a regulation under the first paragraph.