The International Organization for Standardization (ISO) is an independent, non-governmental, not-for-profit organization that develops and publishes fully consensus-based International Standards. ISO members are national standards bodies (NSBs), which may be government, private, or public-private entities. 163 NSBs are members of ISO. The ISO standards portfolio numbers more than 20,000 standards. ISO also has a large network of liaison organizations—which can participate in the ISO process but do not vote. These include many treaty organizations, including the World Health Organization, Codex, the International Labour Organization (ILO), the Organisation for Economic Co-operation and Development (OECD), and so on; as well as numerous other international organizations.