A/RES/S-21/2 Page 22 84. Governments, international organizations and civil society organizations at the national level, including nongovernmental organizations, should encourage partnerships with the private and, where appropriate, the informal sector to strengthen their engagement and collaboration in the implementation of the Programme of Action. The private sector may assist the efforts of Governments, but it cannot substitute for the Government's responsibility to ensure and provide quality, full, safe, accessible, affordable and convenient health services, including reproductive health, family planning and sexual health services. Governments are encouraged to review relevant national laws, standards and regulations, as appropriate, to facilitate private-sector involvement and to seek to ensure that all health-care products and services, including reproductive health products and services, meet internationally accepted standards. 85. Implementation of key elements of the Programme of Action must be tied closely to a broader strengthening of health systems. The public sector plays an important role in this regard and should be encouraged to define its role and to work more closely with the private and informal sectors to monitor and improve standards and to ensure that services are available and that their delivery is of good quality and affordable. 86. Recognizing its increasing role in providing reproductive health information, education, services and commodities, the private sector should ensure that its services and commodities are of high quality and meet internationally accepted standards; that its activities are conducted in a socially responsible, culturally sensitive, acceptable and cost-effective manner; that it fully respects various religions, ethical values and cultural backgrounds of each country's people; and that it adheres to basic rights recognized by the international community and recalled in the Programme of Action. 87. Parliamentarians and members of national legislatures are invited to ensure the legislative reform and expanded awareness-raising necessary for implementing the Programme of Action. They are encouraged to be advocates for the implementation of the Programme of Action, including through the allocation, as appropriate, of financial resources. There should be regular exchanges of experiences among parliamentarians at the subregional, regional, interregional and international levels, where appropriate. 88. External funding and support, from donor countries as well as the private sector, should be provided to promote and sustain the full potential of South-South cooperation, including the South-South initiative "Partners in Population and Development",8 in order to bolster the sharing of relevant experiences, and the mobilization of technical expertise and other resources among developing countries. Updated information on institutions and expertise available within developing countries in the area of population and development, including reproductive health, should be compiled and disseminated. 89. All relevant bodies and entities of the United Nations system should continue to clarify, within existing mechanisms, their specific leadership roles and responsibilities and continue to strengthen their efforts to promote system-wide coordination and collaboration, especially at the country level. The intergovernmental work of the Commission on Population and Development should be reinforced, as should also the inter-agency coordination role of the United Nations Population Fund, in the field of population and reproductive health. 8 Official Records of the Economic and Social Council, 1996, Supplement No. 13 (E/1996/33), part one, chap. XV, para. 198, decision 96/09. /...