jointly sponsored by the United Nations and the International Atomic Energy Agency. jointly organized by the World Health Organization and the International Atomic Energy Agency. The United Nations and the International Atomic Energy Agency. by the Food and Agriculture Organization of the United Nations and the International Atomic Energy Agency. sponsored by the International Atomic Energy Agency. Sponsored by the International Atomic Energy Agency. sponsorship of the International Atomic Energy Agency. by the OECD Nuclear Energy Agency and the International Atomic Energy Agency. organized by the International Atomic Energy Agency. published by the International Atomic Energy Agency.